All pairs of domain combinations at the superfamily level are listed here.
The identification of domain pairs does not account for the possibility of non-contiguous domains. Inserted, or interlaced, domains are seen as having a simple pair ordering.
The links below permit the addition or removal of specific sets of domain combination pairs.
Change the list of genome two-letter codes in the 'Include genomes' box to include domain-pairs from those genomes.
Change the list of genomes in the 'Exclude genomes' box to exclude domain-pairs from those genomes.
List of all two-letter genome codes.
| Superfamily (N) | Superfamily (C) | Number of occurrances | Number unique | |
| P-loop containing nucleoside triphosphate hydrolases | P-loop containing nucleoside triphosphate hydrolases | 259 | 57 |  |
| L domain-like | Protein kinase-like (PK-like) | 244 | 40 |  |
| P-loop containing nucleoside triphosphate hydrolases | L domain-like | 184 | 26 |  |
| F-box domain | RNI-like | 147 | 16 |  |
| RNA-binding domain, RBD | RNA-binding domain, RBD | 115 | 21 |  |
| L domain-like | L domain-like | 114 | 46 |  |
| L domain-like | RNI-like | 96 | 39 |  |
| Thioredoxin-like | GST C-terminal domain-like | 85 | 6 |  |
| alpha-D-mannose-specific plant lectins | Protein kinase-like (PK-like) | 83 | 6 |  |
| Actin-like ATPase domain | Actin-like ATPase domain | 82 | 18 |  |
| RNI-like | Protein kinase-like (PK-like) | 71 | 26 |  |
| TPR-like | TPR-like | 70 | 22 |  |
| ABC transporter transmembrane region | P-loop containing nucleoside triphosphate hydrolases | 62 | 7 |  |
| Barwin-like endoglucanases | PHL pollen allergen | 61 | 3 |  |
| Multidrug resistance efflux transporter EmrE | Multidrug resistance efflux transporter EmrE | 59 | 6 |  |
| ARM repeat | ARM repeat | 58 | 29 |  |
| Calcium ATPase, transduction domain A | HAD-like | 54 | 11 |  |
| Calcium ATPase, transduction domain A | Calcium ATPase, transmembrane domain M | 53 | 10 |  |
| ABC transporter transmembrane region | ABC transporter transmembrane region | 53 | 6 |  |
| Concanavalin A-like lectins/glucanases | Protein kinase-like (PK-like) | 53 | 8 |  |
| HAD-like | Calcium ATPase, transmembrane domain M | 53 | 10 |  |
| Thiolase-like | Thiolase-like | 52 | 2 |  |
| TRAF domain-like | POZ domain | 52 | 4 |  |
| GroES-like | NAD(P)-binding Rossmann-fold domains | 47 | 7 |  |
| RING/U-box | ARM repeat | 46 | 10 |  |
| CRAL/TRIO N-terminal domain | CRAL/TRIO domain | 45 | 6 |  |
| Cupredoxins | Cupredoxins | 45 | 7 |  |
| P-loop containing nucleoside triphosphate hydrolases | Translation proteins | 44 | 14 |  |
| Protein kinase-like (PK-like) | EF-hand | 44 | 3 |  |
| Cyclin-like | Cyclin-like | 42 | 7 |  |
| FAD/NAD(P)-binding domain | FAD/NAD(P)-binding domain | 40 | 8 |  |
| P-loop containing nucleoside triphosphate hydrolases | RNI-like | 38 | 19 |  |
| FAD/NAD(P)-binding domain | FAD-linked reductases, C-terminal domain | 37 | 9 |  |
| S-adenosyl-L-methionine-dependent methyltransferases | S-adenosyl-L-methionine-dependent methyltransferases | 37 | 6 |  |
| NAD(P)-binding Rossmann-fold domains | 6-phosphogluconate dehydrogenase C-terminal domain-like | 37 | 8 |  |
| Calcium ATPase, transduction domain A | Metal cation-transporting ATPase, ATP-binding domain N | 36 | 3 |  |
| Calcium ATPase, transmembrane domain M | Metal cation-transporting ATPase, ATP-binding domain N | 36 | 3 |  |
| Metal cation-transporting ATPase, ATP-binding domain N | HAD-like | 36 | 3 |  |
| Galactose-binding domain-like | (Trans)glycosidases | 35 | 13 |  |
| NAD(P)-binding Rossmann-fold domains | Glyceraldehyde-3-phosphate dehydrogenase-like, C-terminal domain | 33 | 7 |  |
| (Trans)glycosidases | Glycosyl hydrolase domain | 32 | 10 |  |
| RNI-like | RNI-like | 32 | 20 |  |
| C2 domain (Calcium/lipid-binding domain, CaLB) | C2 domain (Calcium/lipid-binding domain, CaLB) | 32 | 12 |  |
| DNA/RNA polymerases | Ribonuclease H-like | 32 | 10 |  |
| RING/U-box | RING/U-box | 31 | 16 |  |
| GroEL-intermediate domain like | GroEL apical domain-like | 31 | 4 |  |
| Nucleotidyltransferase | PAP/OAS1 substrate-binding domain | 31 | 7 |  |
| Riboflavin synthase domain-like | Ferredoxin reductase-like, C-terminal NADP-linked domain | 31 | 9 |  |
| Actin-like ATPase domain | Heat shock protein 70kD (HSP70), peptide-binding domain | 30 | 7 |  |
| Trypsin-like serine proteases | PDZ domain-like | 29 | 6 |  |
| GroEL equatorial domain-like | GroEL-intermediate domain like | 29 | 3 |  |
| DNA-binding domain | DNA-binding domain | 29 | 4 |  |
| GroEL equatorial domain-like | GroEL apical domain-like | 29 | 3 |  |
| Voltage-gated potassium channels | cAMP-binding domain-like | 28 | 5 |  |
| F-box domain | Galactose oxidase, central domain | 28 | 5 |  |
| CCCH zinc finger | CCCH zinc finger | 28 | 12 |  |
| beta-beta-alpha zinc fingers | beta-beta-alpha zinc fingers | 27 | 14 |  |
| Homeodomain-like | Homeodomain-like | 26 | 10 |  |
| Aminoacid dehydrogenase-like, N-terminal domain | NAD(P)-binding Rossmann-fold domains | 26 | 6 |  |
| Protein kinase-like (PK-like) | ARM repeat | 25 | 17 |  |
| HSP40/DnaJ peptide-binding domain | HSP40/DnaJ peptide-binding domain | 25 | 8 |  |
| Chaperone J-domain | HSP40/DnaJ peptide-binding domain | 25 | 8 |  |
| F-box domain | L domain-like | 25 | 8 |  |
| Ypt/Rab-GAP domain of gyp1p | Ypt/Rab-GAP domain of gyp1p | 24 | 3 |  |
| EGF/Laminin | Protein kinase-like (PK-like) | 24 | 4 |  |
| Retrovirus zinc finger-like domains | RNA-binding domain, RBD | 24 | 6 |  |
| Nucleic acid-binding proteins | Nucleic acid-binding proteins | 23 | 17 |  |
| Thioredoxin-like | Thioredoxin-like | 23 | 13 |  |
| Ubiquitin-like | Ubiquitin-like | 23 | 8 |  |
| ENTH/VHS domain | GAT-like domain | 22 | 3 |  |
| Retrovirus zinc finger-like domains | DNA/RNA polymerases | 22 | 5 |  |
| Growth factor receptor domain | Protein kinase-like (PK-like) | 22 | 3 |  |
| Glucocorticoid receptor-like (DNA-binding domain) | Glucocorticoid receptor-like (DNA-binding domain) | 22 | 7 |  |
| Retrovirus zinc finger-like domains | Ribonuclease H-like | 21 | 5 |  |
| Translation proteins | EF-Tu/eEF-1alpha/eIF2-gamma C-terminal domain | 21 | 4 |  |
| Purple acid phosphatase, N-terminal domain | Metallo-dependent phosphatases | 21 | 3 |  |
| P-loop containing nucleoside triphosphate hydrolases | EF-Tu/eEF-1alpha/eIF2-gamma C-terminal domain | 21 | 4 |  |
| GroES-like | GroES-like | 21 | 5 |  |
| "Winged helix" DNA-binding domain | S-adenosyl-L-methionine-dependent methyltransferases | 20 | 1 |  |
| Eukaryotic type KH-domain (KH-domain type I) | Eukaryotic type KH-domain (KH-domain type I) | 20 | 10 |  |
| Adenine nucleotide alpha hydrolases-like | Protein kinase-like (PK-like) | 20 | 3 |  |
| Actin-like ATPase domain | Heat shock protein 70kD (HSP70), C-terminal subdomain | 20 | 5 |  |
| DNA-binding pseudobarrel domain | DNA-binding pseudobarrel domain | 20 | 10 |  |
| Tubulin nucleotide-binding domain-like | Tubulin C-terminal domain-like | 19 | 2 |  |
| PAZ domain | Ribonuclease H-like | 19 | 4 |  |
| DNA-binding pseudobarrel domain | CAD & PB1 domains | 19 | 3 |  |
| Terpenoid cyclases/Protein prenyltransferases | Terpenoid synthases | 18 | 3 |  |
| WRKY DNA-binding domain | WRKY DNA-binding domain | 18 | 4 |  |
| Heat shock protein 70kD (HSP70), peptide-binding domain | Heat shock protein 70kD (HSP70), C-terminal subdomain | 18 | 3 |  |
| vWA-like | RING/U-box | 18 | 5 |  |
| Homeodomain-like | Bet v1-like | 18 | 5 |  |
| ACT-like | ACT-like | 18 | 11 |  |
| FYVE/PHD zinc finger | FYVE/PHD zinc finger | 17 | 11 |  |
| Periplasmic binding protein-like I | Periplasmic binding protein-like II | 17 | 3 |  |
| Galactose-binding domain-like | Galactose-binding domain-like | 17 | 4 |  |
| Phospholipase D/nuclease | Phospholipase D/nuclease | 17 | 7 |  |
| Single hybrid motif | CoA-dependent acyltransferases | 17 | 5 |  |
| Protein kinase-like (PK-like) | RING/U-box | 17 | 6 |  |
| FAD-binding/transporter-associated domain-like | FAD-linked oxidases, C-terminal domain | 17 | 4 |  |
| Double Clp-N motif | P-loop containing nucleoside triphosphate hydrolases | 17 | 5 |  |
| Formate/glycerate dehydrogenase catalytic domain-like | NAD(P)-binding Rossmann-fold domains | 17 | 4 |  |
| Glucocorticoid receptor-like (DNA-binding domain) | AN1-like Zinc finger | 17 | 2 |  |
| Nucleic acid-binding proteins | P-loop containing nucleoside triphosphate hydrolases | 16 | 5 |  |
| WD40 repeat-like | WD40 repeat-like | 16 | 8 |  |
| Protein kinase-like (PK-like) | WD40 repeat-like | 16 | 9 |  |
| (Trans)glycosidases | Beta-D-glucan exohydrolase, C-terminal domain | 16 | 2 |  |
| LuxS/MPP-like metallohydrolase | LuxS/MPP-like metallohydrolase | 16 | 4 |  |
| Zn-dependent exopeptidases | Bacterial exopeptidase dimerisation domain | 15 | 2 |  |
| P-loop containing nucleoside triphosphate hydrolases | post-AAA+ oligomerization domain-like | 15 | 4 |  |
| Ran binding protein zinc finger-like | Ran binding protein zinc finger-like | 15 | 8 |  |
| FAD/NAD(P)-binding domain | FAD/NAD-linked reductases, dimerisation (C-terminal) domain | 15 | 3 |  |
| Nucleotidyltransferase | PAP/Archaeal CCA-adding enzyme, C-terminal domain | 15 | 3 |  |
| PAP/OAS1 substrate-binding domain | PAP/Archaeal CCA-adding enzyme, C-terminal domain | 15 | 3 |  |
| YhbY-like | YhbY-like | 15 | 4 |  |
| DnaJ/Hsp40 cysteine-rich domain | HSP40/DnaJ peptide-binding domain | 15 | 7 |  |
| SNARE-like | SNARE fusion complex | 15 | 2 |  |
| CBS-domain pair | CBS-domain pair | 14 | 6 |  |
| Ubiquitin-like | UBA-like | 14 | 8 |  |
| Bet v1-like | Bet v1-like | 14 | 5 |  |
| Cryptochrome/photolyase, N-terminal domain | Cryptochrome/photolyase FAD-binding domain | 14 | 2 |  |
| Plant invertase/pectin methylesterase inhibitor | Pectin lyase-like | 14 | 3 |  |
| Chaperone J-domain | DnaJ/Hsp40 cysteine-rich domain | 14 | 6 |  |
| Thiamin diphosphate-binding fold (THDP-binding) | Thiamin diphosphate-binding fold (THDP-binding) | 14 | 4 |  |
| PUA domain-like | SET domain | 14 | 2 |  |
| Nucleotidylyl transferase | Anticodon-binding domain of a subclass of class I aminoacyl-tRNA synthetases | 14 | 9 |  |
| Ankyrin repeat | TPR-like | 14 | 2 |  |
| Peripheral subunit-binding domain of 2-oxo acid dehydrogenase complex | CoA-dependent acyltransferases | 14 | 3 |  |
| F-box domain | Kelch motif | 14 | 3 |  |
| Trypsin-like serine proteases | Trypsin-like serine proteases | 14 | 8 |  |
| Single hybrid motif | Peripheral subunit-binding domain of 2-oxo acid dehydrogenase complex | 14 | 3 |  |
| Clc chloride channel | CBS-domain pair | 14 | 2 |  |
| EF-hand | EF-hand | 14 | 5 |  |
| Concanavalin A-like lectins/glucanases | P-domain of calnexin/calreticulin | 14 | 1 |  |
| E set domains | (Trans)glycosidases | 14 | 6 |  |
| ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase | Ribosomal protein S5 domain 2-like | 14 | 7 |  |
| Thioesterase/thiol ester dehydrase-isomerase | Thioesterase/thiol ester dehydrase-isomerase | 13 | 4 |  |
| Zinc hairpin stack | RING/U-box | 13 | 5 |  |
| P-loop containing nucleoside triphosphate hydrolases | FtsH protease domain-like | 13 | 3 |  |
| Translation proteins | EF-G C-terminal domain-like | 13 | 7 |  |
| Arabinanase/levansucrase/invertase | Concanavalin A-like lectins/glucanases | 13 | 2 |  |
| P-loop containing nucleoside triphosphate hydrolases | Ribosomal protein S5 domain 2-like | 13 | 7 |  |
| P-loop containing nucleoside triphosphate hydrolases | EF-G C-terminal domain-like | 13 | 7 |  |
| Subtilisin-like | PA domain | 13 | 3 |  |
| HMA, heavy metal-associated domain | HMA, heavy metal-associated domain | 13 | 7 |  |
| RNase III domain-like | dsRNA-binding domain-like | 13 | 8 |  |
| dsRNA-binding domain-like | dsRNA-binding domain-like | 13 | 6 |  |
| Retrovirus zinc finger-like domains | Retrovirus zinc finger-like domains | 13 | 12 |  |
| P-loop containing nucleoside triphosphate hydrolases | RING/U-box | 13 | 4 |  |
| Thiamin diphosphate-binding fold (THDP-binding) | TK C-terminal domain-like | 13 | 2 |  |
| EF-hand | Riboflavin synthase domain-like | 12 | 1 |  |
| PreATP-grasp domain | Glutathione synthetase ATP-binding domain-like | 12 | 9 |  |
| Phosphoglucomutase, first 3 domains | Phosphoglucomutase, first 3 domains | 12 | 5 |  |
| POZ domain | Skp1 dimerisation domain-like | 12 | 3 |  |
| ACT-like | Protein kinase-like (PK-like) | 12 | 2 |  |
| EF-hand | Ferredoxin reductase-like, C-terminal NADP-linked domain | 12 | 1 |  |
| CHY zinc finger-like | Zinc hairpin stack | 12 | 4 |  |
| CHY zinc finger-like | RING/U-box | 12 | 4 |  |
| E set domains | Glycosyl hydrolase domain | 12 | 4 |  |
| Ankyrin repeat | RING/U-box | 12 | 5 |  |
| EF-G C-terminal domain-like | EF-G C-terminal domain-like | 12 | 6 |  |
| RING/U-box | TRAF domain-like | 12 | 3 |  |
| ARM repeat | Clathrin adaptor appendage domain | 12 | 4 |  |
| P-loop containing nucleoside triphosphate hydrolases | E set domains | 12 | 3 |  |
| Ribosomal protein S5 domain 2-like | Ribonuclease PH domain 2-like | 12 | 4 |  |
| UDP-Glycosyltransferase/glycogen phosphorylase | HAD-like | 12 | 3 |  |
| Plant lectins/antimicrobial peptides | Plant lectins/antimicrobial peptides | 11 | 6 |  |
| vWA-like | beta-sandwich domain of Sec23/24 | 11 | 5 |  |
| Protein kinase-like (PK-like) | Protein kinase-like (PK-like) | 11 | 8 |  |
| Zn-finger domain of Sec23/24 | vWA-like | 11 | 5 |  |
| N-terminal domain of alpha and beta subunits of F1 ATP synthase | P-loop containing nucleoside triphosphate hydrolases | 11 | 6 |  |
| Terpenoid cyclases/Protein prenyltransferases | Terpenoid cyclases/Protein prenyltransferases | 11 | 3 |  |
| Nucleic acid-binding proteins | Class II aaRS and biotin synthetases | 11 | 7 |  |
| Zn-finger domain of Sec23/24 | beta-sandwich domain of Sec23/24 | 11 | 5 |  |
| C2 domain (Calcium/lipid-binding domain, CaLB) | Phospholipase D/nuclease | 11 | 3 |  |
| Cation efflux protein transmembrane domain-like | Cation efflux protein cytoplasmic domain-like | 11 | 5 |  |
| F-box domain | Tubby C-terminal domain-like | 11 | 3 |  |
| CAD & PB1 domains | Protein kinase-like (PK-like) | 11 | 1 |  |
| NAD(P)-binding Rossmann-fold domains | LDH C-terminal domain-like | 11 | 1 |  |
| ARM repeat | WD40 repeat-like | 11 | 7 |  |
| beta-beta-alpha zinc fingers | Ribonuclease H-like | 11 | 5 |  |
| RNase III domain-like | RNase III domain-like | 11 | 7 |  |
| P-loop containing nucleoside triphosphate hydrolases | dsRNA-binding domain-like | 11 | 6 |  |
| t-snare proteins | SNARE fusion complex | 11 | 3 |  |
| Calponin-homology domain, CH-domain | P-loop containing nucleoside triphosphate hydrolases | 11 | 3 |  |
| Homodimeric domain of signal transducing histidine kinase | ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase | 11 | 6 |  |
| Ankyrin repeat | P-loop containing nucleoside triphosphate hydrolases | 11 | 3 |  |
| FYVE/PHD zinc finger | RING/U-box | 11 | 8 |  |
| RCC1/BLIP-II | FYVE/PHD zinc finger | 11 | 3 |  |
| PH domain-like | FYVE/PHD zinc finger | 11 | 3 |  |
| 2Fe-2S ferredoxin-like | FAD-binding/transporter-associated domain-like | 10 | 2 |  |
| DPP6 N-terminal domain-like | alpha/beta-Hydrolases | 10 | 2 |  |
| CO dehydrogenase ISP C-domain like | CO dehydrogenase flavoprotein C-terminal domain-like | 10 | 2 |  |
| FAD-binding/transporter-associated domain-like | CO dehydrogenase molybdoprotein N-domain-like | 10 | 2 |  |
| CO dehydrogenase molybdoprotein N-domain-like | Molybdenum cofactor-binding domain | 10 | 2 |  |
| Class II aaRS and biotin synthetases | Class II aaRS ABD-related | 10 | 8 |  |
| FAD-binding/transporter-associated domain-like | Molybdenum cofactor-binding domain | 10 | 2 |  |
| 2Fe-2S ferredoxin-like | CO dehydrogenase ISP C-domain like | 10 | 2 |  |
| FAD-binding/transporter-associated domain-like | CO dehydrogenase flavoprotein C-terminal domain-like | 10 | 2 |  |
| Adenine nucleotide alpha hydrolases-like | RING/U-box | 10 | 1 |  |
| 2Fe-2S ferredoxin-like | CO dehydrogenase molybdoprotein N-domain-like | 10 | 2 |  |
| RING/U-box | WD40 repeat-like | 10 | 6 |  |
| CO dehydrogenase flavoprotein C-terminal domain-like | Molybdenum cofactor-binding domain | 10 | 2 |  |
| 2Fe-2S ferredoxin-like | Molybdenum cofactor-binding domain | 10 | 2 |  |
| vWA-like | Helical domain of Sec23/24 | 10 | 4 |  |
| Ribosomal protein S5 domain 2-like | GHMP Kinase, C-terminal domain | 10 | 4 |  |
| CO dehydrogenase ISP C-domain like | CO dehydrogenase molybdoprotein N-domain-like | 10 | 2 |  |
| Enolase N-terminal domain-like | Enolase C-terminal domain-like | 10 | 3 |  |
| beta-sandwich domain of Sec23/24 | Helical domain of Sec23/24 | 10 | 4 |  |
| Lipase/lipooxygenase domain (PLAT/LH2 domain) | Lipoxigenase | 10 | 2 |  |
| DNA repair protein MutS, domain III | P-loop containing nucleoside triphosphate hydrolases | 10 | 7 |  |
| 2Fe-2S ferredoxin-like | CO dehydrogenase flavoprotein C-terminal domain-like | 10 | 2 |  |
| CO dehydrogenase ISP C-domain like | FAD-binding/transporter-associated domain-like | 10 | 2 |  |
| E set domains | Ankyrin repeat | 10 | 2 |  |
| PIN domain-like | 5' to 3' exonuclease, C-terminal subdomain | 10 | 5 |  |
| BRCT domain | BRCT domain | 10 | 7 |  |
| CO dehydrogenase flavoprotein C-terminal domain-like | CO dehydrogenase molybdoprotein N-domain-like | 10 | 2 |  |
| CO dehydrogenase ISP C-domain like | Molybdenum cofactor-binding domain | 10 | 2 |  |
| Zn-finger domain of Sec23/24 | Helical domain of Sec23/24 | 10 | 4 |  |
| PH domain-like | RCC1/BLIP-II | 9 | 2 |  |
| Cullin repeat-like | Cullin homology domain | 9 | 4 |  |
| TPR-like | RING/U-box | 9 | 5 |  |
| FAS1 domain | FAS1 domain | 9 | 3 |  |
| MFS general substrate transporter | MFS general substrate transporter | 9 | 2 |  |
| ValRS/IleRS/LeuRS editing domain | Nucleotidylyl transferase | 9 | 5 |  |
| CheY-like | Homeodomain-like | 9 | 2 |  |
| SNARE-like | Second domain of Mu2 adaptin subunit (ap50) of ap2 adaptor | 9 | 2 |  |
| beta-sandwich domain of Sec23/24 | C-terminal, gelsolin-like domain of Sec23/24 | 9 | 3 |  |
| P-loop containing nucleoside triphosphate hydrolases | ARM repeat | 9 | 5 |  |
| Acyl-CoA dehydrogenase NM domain-like | Acyl-CoA dehydrogenase C-terminal domain-like | 9 | 5 |  |
| Histone H3 K4-specific methyltransferase SET7/9 N-terminal domain | Histone H3 K4-specific methyltransferase SET7/9 N-terminal domain | 9 | 5 |  |
| Helical domain of Sec23/24 | C-terminal, gelsolin-like domain of Sec23/24 | 9 | 3 |  |
| FYVE/PHD zinc finger | Homeodomain-like | 9 | 3 |  |
| EF-G C-terminal domain-like | Ribosomal protein S5 domain 2-like | 9 | 6 |  |
| Saposin | Saposin | 9 | 1 |  |
| WD40 repeat-like | NHL repeat | 9 | 1 |  |
| Phosphoenolpyruvate/pyruvate domain | PK C-terminal domain-like | 9 | 1 |  |
| Zn-finger domain of Sec23/24 | C-terminal, gelsolin-like domain of Sec23/24 | 9 | 3 |  |
| vWA-like | C-terminal, gelsolin-like domain of Sec23/24 | 9 | 3 |  |
| P-loop containing nucleoside triphosphate hydrolases | FYVE/PHD zinc finger | 9 | 6 |  |
| Cullin homology domain | "Winged helix" DNA-binding domain | 9 | 4 |  |
| NAD(P)-binding Rossmann-fold domains | NAD(P)-binding Rossmann-fold domains | 9 | 5 |  |
| Ubiquitin-like | Zn-binding ribosomal proteins | 9 | 2 |  |
| Cdc48 domain 2-like | P-loop containing nucleoside triphosphate hydrolases | 9 | 4 |  |
| PK beta-barrel domain-like | Phosphoenolpyruvate/pyruvate domain | 9 | 1 |  |
| RING/U-box | Nucleotide-diphospho-sugar transferases | 9 | 2 |  |
| NTF2-like | RNA-binding domain, RBD | 9 | 2 |  |
| PK beta-barrel domain-like | PK C-terminal domain-like | 9 | 1 |  |
| UBA-like | UBA-like | 9 | 5 |  |
| Chromo domain-like | Chromo domain-like | 9 | 4 |  |
| HCP-like | HCP-like | 8 | 5 |  |
| ADC-like | P-loop containing nucleoside triphosphate hydrolases | 8 | 3 |  |
| HMA, heavy metal-associated domain | Calcium ATPase, transduction domain A | 8 | 7 |  |
| PAZ domain | RNase III domain-like | 8 | 5 |  |
| PH domain-like | Bet v1-like | 8 | 3 |  |
| Flavoproteins | Ferredoxin reductase-like, C-terminal NADP-linked domain | 8 | 4 |  |
| ARM repeat | Hect, E3 ligase catalytic domain | 8 | 2 |  |
| ADC-like | Cdc48 domain 2-like | 8 | 3 |  |
| GroEL apical domain-like | SAICAR synthase-like | 8 | 4 |  |
| Translation proteins | Ribosomal protein S5 domain 2-like | 8 | 5 |  |
| Translational machinery components | L30e-like | 8 | 2 |  |
| Flavoproteins | Riboflavin synthase domain-like | 8 | 4 |  |
| FYVE/PHD zinc finger | Acyl-CoA N-acyltransferases (Nat) | 8 | 5 |  |
| Nucleotide-diphospho-sugar transferases | Trimeric LpxA-like enzymes | 8 | 2 |  |
| Cullin repeat-like | "Winged helix" DNA-binding domain | 8 | 3 |  |
| TPR-like | Protein kinase-like (PK-like) | 8 | 3 |  |
| HMA, heavy metal-associated domain | HAD-like | 8 | 7 |  |
| GAF domain-like | ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase | 8 | 4 |  |
| ValRS/IleRS/LeuRS editing domain | Anticodon-binding domain of a subclass of class I aminoacyl-tRNA synthetases | 8 | 4 |  |
| TRAF domain-like | Cysteine proteinases | 8 | 2 |  |
| ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase | HSP90 C-terminal domain | 8 | 2 |  |
| Thiamin diphosphate-binding fold (THDP-binding) | DHS-like NAD/FAD-binding domain | 8 | 2 |  |
| NAD(P)-binding Rossmann-fold domains | ACT-like | 8 | 2 |  |
| Chromo domain-like | P-loop containing nucleoside triphosphate hydrolases | 8 | 3 |  |
| (Phosphotyrosine protein) phosphatases II | C2 domain (Calcium/lipid-binding domain, CaLB) | 8 | 4 |  |
| ARM repeat | Tudor/PWWP/MBT | 8 | 5 |  |
| PAZ domain | dsRNA-binding domain-like | 8 | 5 |  |
| Leukotriene A4 hydrolase N-terminal domain | Metalloproteases ("zincins"), catalytic domain | 8 | 2 |  |
| PYP-like sensor domain (PAS domain) | PYP-like sensor domain (PAS domain) | 8 | 5 |  |
| GST C-terminal domain-like | eEF-1beta-like | 8 | 2 |  |
| Ribosomal protein S5 domain 2-like | HSP90 C-terminal domain | 8 | 2 |  |
| Histone H3 K4-specific methyltransferase SET7/9 N-terminal domain | SAICAR synthase-like | 8 | 5 |  |
| SET domain | RuBisCo LSMT C-terminal, substrate-binding domain | 7 | 2 |  |
| HMA, heavy metal-associated domain | Calcium ATPase, transmembrane domain M | 7 | 6 |  |
| Protease propeptides/inhibitors | Subtilisin-like | 7 | 2 |  |
| P-loop containing nucleoside triphosphate hydrolases | EF-hand | 7 | 3 |  |
| Thioredoxin-like | Ubiquitin-like | 7 | 5 |  |
| (Trans)glycosidases | Galactose mutarotase-like | 7 | 4 |  |
| ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase | CheY-like | 7 | 4 |  |
| SWIB/MDM2 domain | Plus3-like | 7 | 5 |  |
| Fe-S cluster assembly (FSCA) domain-like | Fe-S cluster assembly (FSCA) domain-like | 7 | 2 |  |
| PH domain-like | BEACH domain | 7 | 4 |  |
| "Winged helix" DNA-binding domain | "Winged helix" DNA-binding domain | 7 | 5 |  |
| FKBP-like | TPR-like | 7 | 3 |  |
| P-loop containing nucleoside triphosphate hydrolases | C-terminal domain of alpha and beta subunits of F1 ATP synthase | 7 | 4 |  |
| BEACH domain | WD40 repeat-like | 7 | 4 |  |
| FKBP-like | FKBP-like | 7 | 3 |  |
| UBA-like | XPC-binding domain | 7 | 3 |  |
| HD-domain/PDEase-like | Nucleotidyltransferase | 7 | 3 |  |
| Homodimeric domain of signal transducing histidine kinase | CheY-like | 7 | 4 |  |
| YrdC/RibB | RibA-like | 7 | 2 |  |
| "Winged helix" DNA-binding domain | RNA-binding domain, RBD | 7 | 2 |  |
| L9 N-domain-like | Ribonuclease H-like | 7 | 2 |  |
| Actin depolymerizing proteins | Actin depolymerizing proteins | 7 | 3 |  |
| Sigma2 domain of RNA polymerase sigma factors | Sigma3 and sigma4 domains of RNA polymerase sigma factors | 7 | 1 |  |
| Initiation factor IF2/eIF5b, domain 3 | Translation proteins | 7 | 2 |  |
| Glutathione synthetase ATP-binding domain-like | Rudiment single hybrid motif | 7 | 6 |  |
| Sec7 domain | ARM repeat | 7 | 6 |  |
| Sigma3 and sigma4 domains of RNA polymerase sigma factors | Sigma3 and sigma4 domains of RNA polymerase sigma factors | 7 | 1 |  |
| FYVE/PHD zinc finger | SET domain | 7 | 5 |  |
| P-loop containing nucleoside triphosphate hydrolases | Initiation factor IF2/eIF5b, domain 3 | 7 | 2 |  |
| P-loop containing nucleoside triphosphate hydrolases | "Winged helix" DNA-binding domain | 7 | 6 |  |
| Acid proteases | Saposin | 7 | 2 |  |
| RING/U-box | Cysteine proteinases | 7 | 5 |  |
| Ubiquitin-like | XPC-binding domain | 7 | 3 |  |
| P-loop containing nucleoside triphosphate hydrolases | PRTase-like | 7 | 1 |  |
| DNA ligase/mRNA capping enzyme, catalytic domain | Nucleic acid-binding proteins | 6 | 4 |  |
| Zinc beta-ribbon | Cyclin-like | 6 | 4 |  |
| Plus3-like | GYF domain | 6 | 4 |  |
| SNARE fusion complex | SNARE fusion complex | 6 | 1 |  |
| FYVE/PHD zinc finger | Plus3-like | 6 | 4 |  |
| SWIB/MDM2 domain | GYF domain | 6 | 4 |  |
| Amine oxidase N-terminal region | Amine oxidase N-terminal region | 6 | 2 |  |
| PreATP-grasp domain | Rudiment single hybrid motif | 6 | 5 |  |
| C2 domain (Calcium/lipid-binding domain, CaLB) | Formin homology 2 domain (FH2 domain) | 6 | 2 |  |
| N-terminal domain of alpha and beta subunits of F1 ATP synthase | C-terminal domain of alpha and beta subunits of F1 ATP synthase | 6 | 3 |  |
| RNA-binding domain, RBD | CCCH zinc finger | 6 | 3 |  |
| Actin depolymerizing proteins | VHP, Villin headpiece domain | 6 | 2 |  |
| Kelch motif | Kelch motif | 6 | 5 |  |
| Protein kinase-like (PK-like) | Ankyrin repeat | 6 | 2 |  |
| Peptidase/esterase 'gauge' domain | alpha/beta-Hydrolases | 6 | 2 |  |
| PYP-like sensor domain (PAS domain) | Protein kinase-like (PK-like) | 6 | 2 |  |
| Plant lectins/antimicrobial peptides | Lysozyme-like | 6 | 3 |  |
| L domain-like | Adhesin YadA, collagen-binding domain | 6 | 1 |  |
| dsRNA-binding domain-like | Ribosomal protein S5 domain 2-like | 6 | 1 |  |
| P-loop containing nucleoside triphosphate hydrolases | Class I glutamine amidotransferase-like | 6 | 2 |  |
| Carbamate kinase-like | ACT-like | 6 | 2 |  |
| F-box domain | F-box domain | 6 | 3 |  |
| Composite domain of metallo-dependent hydrolases | Metallo-dependent hydrolases | 6 | 4 |  |
| WW domain | P-loop containing nucleoside triphosphate hydrolases | 6 | 1 |  |
| SAP domain | FYVE/PHD zinc finger | 6 | 2 |  |
| Ankyrin repeat | POZ domain | 6 | 3 |  |
| Phosphoglucomutase, first 3 domains | Phosphoglucomutase, C-terminal domain | 6 | 3 |  |
| Domain of the SRP/SRP receptor G-proteins | P-loop containing nucleoside triphosphate hydrolases | 6 | 4 |  |
| FYVE/PHD zinc finger | GYF domain | 6 | 4 |  |
| P-loop containing nucleoside triphosphate hydrolases | RNase III domain-like | 6 | 4 |  |
| Amine oxidase N-terminal region | Amine oxidase catalytic domain | 6 | 2 |  |
| CRAL/TRIO domain | Supernatant protein factor (SPF), C-terminal domain | 6 | 2 |  |
| ArfGap/RecO-like zinc finger | C2 domain (Calcium/lipid-binding domain, CaLB) | 6 | 2 |  |
| Voltage-gated potassium channels | Ankyrin repeat | 6 | 2 |  |
| WW domain | WW domain | 6 | 4 |  |
| Eukaryotic RPB5 N-terminal domain | RPB5-like RNA polymerase subunit | 6 | 1 |  |
| Protein kinase-like (PK-like) | KA1-like | 6 | 1 |  |
| beta-N-acetylhexosaminidase-like domain | (Trans)glycosidases | 6 | 2 |  |
| Voltage-gated potassium channels | Voltage-gated potassium channels | 6 | 5 |  |
| FYVE/PHD zinc finger | SWIB/MDM2 domain | 6 | 4 |  |
| N-terminal, heterodimerisation domain of RBP7 (RpoE) | Nucleic acid-binding proteins | 6 | 2 |  |
| (Trans)glycosidases | Ricin B-like lectins | 6 | 2 |  |
| Nucleic acid-binding proteins | Translation proteins SH3-like domain | 6 | 4 |  |
| TRAF domain-like | TRAF domain-like | 6 | 2 |  |
| ENT-like | Tudor/PWWP/MBT | 6 | 2 |  |
| (Phosphotyrosine protein) phosphatases II | Formin homology 2 domain (FH2 domain) | 6 | 2 |  |
| cAMP-binding domain-like | Ankyrin repeat | 6 | 2 |  |
| NAD(P)-binding Rossmann-fold domains | Aldolase | 6 | 2 |  |
| Carbamate kinase-like | ALDH-like | 6 | 1 |  |
| Translation initiation factor 2 beta, aIF2beta, N-terminal domain | Zinc-binding domain of translation initiation factor 2 beta | 6 | 2 |  |
| Coiled-coil domain of nucleotide exchange factor GrpE | Head domain of nucleotide exchange factor GrpE | 6 | 1 |  |
| PH domain-like | Oxysterol-binding protein-like | 6 | 2 |  |
| FF domain | FF domain | 6 | 3 |  |
| Glutamine synthetase, N-terminal domain | Glutamine synthetase/guanido kinase | 6 | 3 |  |
| CRAL/TRIO N-terminal domain | Supernatant protein factor (SPF), C-terminal domain | 6 | 2 |  |
| GAF domain-like | Homodimeric domain of signal transducing histidine kinase | 6 | 3 |  |
| PH domain-like | WD40 repeat-like | 6 | 3 |  |
| Eukaryotic type KH-domain (KH-domain type I) | CCCH zinc finger | 5 | 3 |  |
| RCC1/BLIP-II | Protein kinase-like (PK-like) | 5 | 3 |  |
| Creatinase/aminopeptidase | "Winged helix" DNA-binding domain | 5 | 2 |  |
| PriA/YqbF domain | GINS helical bundle-like | 5 | 2 |  |
| HLH, helix-loop-helix DNA-binding domain | ACT-like | 5 | 3 |  |
| PH domain-like | GTPase activation domain, GAP | 5 | 1 |  |
| Rudiment single hybrid motif | Cytochrome f subunit of the cytochrome b6f complex, transmembrane anchor | 5 | 2 |  |
| Galactose mutarotase-like | Glycosyl hydrolase domain | 5 | 2 |  |
| Creatinase/prolidase N-terminal domain | Creatinase/aminopeptidase | 5 | 4 |  |
| RING/U-box | BRCT domain | 5 | 2 |  |
| PH domain-like | ArfGap/RecO-like zinc finger | 5 | 3 |  |
| Ribonuclease H-like | HRDC-like | 5 | 1 |  |
| Eukaryotic type KH-domain (KH-domain type I) | Nucleic acid-binding proteins | 5 | 3 |  |
| FAD/NAD(P)-binding domain | EF-hand | 5 | 2 |  |
| Ribosomal protein L7/12, oligomerisation (N-terminal) domain | ClpS-like | 5 | 1 |  |
| Class I glutamine amidotransferase-like | Class I glutamine amidotransferase-like | 5 | 2 |  |
| PLP-binding barrel | Alanine racemase C-terminal domain-like | 5 | 2 |  |
| PA domain | Zn-dependent exopeptidases | 5 | 2 |  |
| Families 57/38 glycoside transferase middle domain | Galactose mutarotase-like | 5 | 3 |  |
| N-terminal domain of eukaryotic peptide chain release factor subunit 1, ERF1 | L30e-like | 5 | 1 |  |
| TPR-like | Thioredoxin-like | 5 | 3 |  |
| ClpP/crotonase | NAD(P)-binding Rossmann-fold domains | 5 | 2 |  |
| Aldolase | Aminoacid dehydrogenase-like, N-terminal domain | 5 | 1 |  |
| Activating enzymes of the ubiquitin-like proteins | Activating enzymes of the ubiquitin-like proteins | 5 | 3 |  |
| Thiamin pyrophosphokinase, catalytic domain | Thiamin pyrophosphokinase, substrate-binding domain | 5 | 1 |  |
| P-loop containing nucleoside triphosphate hydrolases | Thioredoxin-like | 5 | 2 |  |
| Ran binding protein zinc finger-like | RNA-binding domain, RBD | 5 | 3 |  |
| Ribosomal L11/L12e N-terminal domain | Ribosomal protein L11, C-terminal domain | 5 | 2 |  |
| P-loop containing nucleoside triphosphate hydrolases | Homeodomain-like | 5 | 2 |  |
| PH domain-like | P-loop containing nucleoside triphosphate hydrolases | 5 | 2 |  |
| Ubiquitin-like | BAG domain | 5 | 3 |  |
| 4Fe-4S ferredoxins | P-loop containing nucleoside triphosphate hydrolases | 5 | 1 |  |
| ARID-like | FYVE/PHD zinc finger | 5 | 2 |  |
| ThrRS/AlaRS common domain | Class II aaRS and biotin synthetases | 5 | 3 |  |
| F1F0 ATP synthase subunit C | F1F0 ATP synthase subunit C | 5 | 1 |  |
| Sec63 N-terminal domain-like | E set domains | 5 | 3 |  |
| BAR/IMD domain-like | ArfGap/RecO-like zinc finger | 5 | 3 |  |
| Clathrin adaptor appendage domain | Subdomain of clathrin and coatomer appendage domain | 5 | 3 |  |
| 6-phosphogluconate dehydrogenase C-terminal domain-like | 6-phosphogluconate dehydrogenase C-terminal domain-like | 5 | 2 |  |
| TAZ domain | RING/U-box | 5 | 3 |  |
| RNA-binding domain, RBD | PABC (PABP) domain | 5 | 2 |  |
| Protein kinase-like (PK-like) | PapD-like | 5 | 2 |  |
| PLC-like phosphodiesterases | PLC-like phosphodiesterases | 5 | 2 |  |
| ClpP/crotonase | 6-phosphogluconate dehydrogenase C-terminal domain-like | 5 | 2 |  |
| PurM N-terminal domain-like | PurM C-terminal domain-like | 5 | 4 |  |
| "Winged helix" DNA-binding domain | E2F-DP heterodimerization region | 5 | 2 |  |
| ISP domain | Bet v1-like | 5 | 2 |  |
| Ricin B-like lectins | Ricin B-like lectins | 5 | 2 |  |
| PapD-like | WD40 repeat-like | 5 | 2 |  |
| CCCH zinc finger | RING/U-box | 5 | 2 |  |
| Glyoxalase/Bleomycin resistance protein/Dihydroxybiphenyl dioxygenase | Glyoxalase/Bleomycin resistance protein/Dihydroxybiphenyl dioxygenase | 5 | 2 |  |
| Periplasmic binding protein-like II | ACT-like | 5 | 2 |  |
| P-loop containing nucleoside triphosphate hydrolases | Sec63 N-terminal domain-like | 5 | 4 |  |
| BAR/IMD domain-like | PH domain-like | 5 | 3 |  |
| alpha/beta-Hydrolases | alpha/beta-Hydrolases | 5 | 2 |  |
| N-terminal domain of eukaryotic peptide chain release factor subunit 1, ERF1 | Translational machinery components | 5 | 1 |  |
| Transducin (alpha subunit), insertion domain | P-loop containing nucleoside triphosphate hydrolases | 5 | 2 |  |
| Cytochrome f, large domain | Cytochrome f subunit of the cytochrome b6f complex, transmembrane anchor | 5 | 2 |  |
| Cytochrome f, large domain | Rudiment single hybrid motif | 5 | 2 |  |
| Nucleic acid-binding proteins | Retrovirus zinc finger-like domains | 5 | 4 |  |
| TPR-like | HCP-like | 5 | 5 |  |
| ARM repeat | Subdomain of clathrin and coatomer appendage domain | 5 | 3 |  |
| Rap30/74 interaction domains | "Winged helix" DNA-binding domain | 5 | 2 |  |
| RuBisCO, large subunit, small (N-terminal) domain | RuBisCo, C-terminal domain | 4 | 1 |  |
| P-loop containing nucleoside triphosphate hydrolases | Smc hinge domain | 4 | 3 |  |
| Ribonuclease H-like | Chromo domain-like | 4 | 4 |  |
| Tex N-terminal region-like | Ribonuclease H-like | 4 | 2 |  |
| P-loop containing nucleoside triphosphate hydrolases | HAND domain of the nucleosome remodeling ATPase ISWI | 4 | 1 |  |
| cAMP-binding domain-like | Thioesterase/thiol ester dehydrase-isomerase | 4 | 1 |  |
| PGBD-like | Metalloproteases ("zincins"), catalytic domain | 4 | 2 |  |
| Glycoside hydrolase/deacetylase | Galactose mutarotase-like | 4 | 2 |  |
| TAZ domain | FYVE/PHD zinc finger | 4 | 2 |  |
| N-terminal nucleophile aminohydrolases (Ntn hydrolases) | Alpha subunit of glutamate synthase, C-terminal domain | 4 | 4 |  |
| DUSP-like | Cysteine proteinases | 4 | 2 |  |
| Nicotinate/Quinolinate PRTase N-terminal domain-like | Nicotinate/Quinolinate PRTase C-terminal domain-like | 4 | 2 |  |
| PA domain | Transferrin receptor-like dimerisation domain | 4 | 1 |  |
| DNA-binding domain | DNA-binding pseudobarrel domain | 4 | 3 |  |
| Glutathione synthetase ATP-binding domain-like | Single hybrid motif | 4 | 4 |  |
| Starch-binding domain-like | Galactose-binding domain-like | 4 | 2 |  |
| RING/U-box | Homeodomain-like | 4 | 2 |  |
| F-box domain | Clavaminate synthase-like | 4 | 3 |  |
| RuvA domain 2-like | SH2 domain | 4 | 2 |  |
| Ribosomal L27 protein-like | Nucleic acid-binding proteins | 4 | 2 |  |
| Serine metabolism enzymes domain | ACT-like | 4 | 1 |  |
| NAD(P)-binding Rossmann-fold domains | Serine metabolism enzymes domain | 4 | 1 |  |
| BAR/IMD domain-like | Ankyrin repeat | 4 | 2 |  |
| HAND domain of the nucleosome remodeling ATPase ISWI | Homeodomain-like | 4 | 1 |  |
| Ubiquitin-like | Cysteine proteinases | 4 | 3 |  |
| Amidase signature (AS) enzymes | TPR-like | 4 | 1 |  |
| P-loop containing nucleoside triphosphate hydrolases | Signal peptide-binding domain | 4 | 3 |  |
| POZ domain | TAZ domain | 4 | 2 |  |
| Nucleotidylyl transferase | Nucleotidylyl transferase | 4 | 1 |  |
| PLC-like phosphodiesterases | C2 domain (Calcium/lipid-binding domain, CaLB) | 4 | 2 |  |
| Tex N-terminal region-like | RuvA domain 2-like | 4 | 2 |  |
| PEP carboxykinase N-terminal domain | PEP carboxykinase-like | 4 | 2 |  |
| UBC-like | RING/U-box | 4 | 2 |  |
| Chromo domain-like | S-adenosyl-L-methionine-dependent methyltransferases | 4 | 1 |  |
| ACT-like | Glyceraldehyde-3-phosphate dehydrogenase-like, C-terminal domain | 4 | 1 |  |
| PH domain-like | Ankyrin repeat | 4 | 2 |  |
| NAD(P)-binding Rossmann-fold domains | UDP-glucose/GDP-mannose dehydrogenase C-terminal domain | 4 | 2 |  |
| ARM repeat | TPR-like | 4 | 1 |  |
| HAD-like | dsRNA-binding domain-like | 4 | 2 |  |
| SH2 domain | SH2 domain | 4 | 2 |  |
| L domain-like | Thioredoxin-like | 4 | 1 |  |
| PAH2 domain | PAH2 domain | 4 | 1 |  |
| Acid proteases | DNA/RNA polymerases | 4 | 4 |  |
| WD40 repeat-like | Cyclophilin-like | 4 | 1 |  |
| DNase I-like | DNA/RNA polymerases | 4 | 2 |  |
| "Winged helix" DNA-binding domain | Sec63 N-terminal domain-like | 4 | 3 |  |
| Homeodomain-like | FAD/NAD(P)-binding domain | 4 | 2 |  |
| TPR-like | CAD & PB1 domains | 4 | 2 |  |
| Galactose oxidase, central domain | E set domains | 4 | 2 |  |
| Formate/glycerate dehydrogenase catalytic domain-like | Serine metabolism enzymes domain | 4 | 1 |  |
| Rhodanese/Cell cycle control phosphatase | Rhodanese/Cell cycle control phosphatase | 4 | 2 |  |
| Tex N-terminal region-like | SH2 domain | 4 | 2 |  |
| FAD/NAD(P)-binding domain | Succinate dehydrogenase/fumarate reductase flavoprotein, catalytic domain | 4 | 1 |  |
| Ribosomal protein L6 | Ribosomal protein L6 | 4 | 2 |  |
| WW domain | FF domain | 4 | 2 |  |
| Plant invertase/pectin methylesterase inhibitor | Plant invertase/pectin methylesterase inhibitor | 4 | 2 |  |
| Ricin B-like lectins | Glycosyl hydrolase domain | 4 | 1 |  |
| Ribonuclease H-like | RuvA domain 2-like | 4 | 2 |  |
| N-terminal nucleophile aminohydrolases (Ntn hydrolases) | FMN-linked oxidoreductases | 4 | 4 |  |
| ArfGap/RecO-like zinc finger | Ankyrin repeat | 4 | 2 |  |
| WD40 repeat-like | DPP6 N-terminal domain-like | 4 | 2 |  |
| PDZ domain-like | TPR-like | 4 | 1 |  |
| CAD & PB1 domains | RING/U-box | 4 | 2 |  |
| Cytochrome P450 | Cytochrome P450 | 4 | 2 |  |
| Carbamate kinase-like | Glyceraldehyde-3-phosphate dehydrogenase-like, C-terminal domain | 4 | 1 |  |
| Zn-dependent exopeptidases | Transferrin receptor-like dimerisation domain | 4 | 1 |  |
| PA domain | RING/U-box | 4 | 2 |  |
| C2 domain (Calcium/lipid-binding domain, CaLB) | ARM repeat | 4 | 3 |  |
| DNA clamp | DNA clamp | 4 | 1 |  |
| UBA-like | Elongation factor Ts (EF-Ts), dimerisation domain | 4 | 2 |  |
| Metalloproteases ("zincins"), catalytic domain | HAD-like | 4 | 1 |  |
| Rhomboid-like | UBA-like | 4 | 1 |  |
| Kelch motif | Metallo-dependent phosphatases | 4 | 1 |  |
| PYP-like sensor domain (PAS domain) | ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase | 4 | 3 |  |
| SWIB/MDM2 domain | SWIB/MDM2 domain | 4 | 2 |  |
| PYP-like sensor domain (PAS domain) | GAF domain-like | 4 | 3 |  |
| 4'-phosphopantetheinyl transferase | 4'-phosphopantetheinyl transferase | 4 | 3 |  |
| Diaminopimelate epimerase-like | Diaminopimelate epimerase-like | 4 | 1 |  |
| Carbamate kinase-like | NAD(P)-binding Rossmann-fold domains | 4 | 1 |  |
| N-terminal nucleophile aminohydrolases (Ntn hydrolases) | Adenine nucleotide alpha hydrolases-like | 4 | 2 |  |
| P-loop containing nucleoside triphosphate hydrolases | TGS-like | 4 | 3 |  |
| Homeodomain-like | FAD-linked reductases, C-terminal domain | 4 | 2 |  |
| Actin depolymerizing proteins | C-terminal, gelsolin-like domain of Sec23/24 | 4 | 1 |  |
| Ribonuclease H-like | SH2 domain | 4 | 2 |  |
| alpha-D-mannose-specific plant lectins | Hairpin loop containing domain-like | 4 | 3 |  |
| DNA repair protein MutS, domain I | P-loop containing nucleoside triphosphate hydrolases | 4 | 4 |  |
| GAF domain-like | CheY-like | 4 | 2 |  |
| Rudiment single hybrid motif | Single hybrid motif | 4 | 4 |  |
| POZ domain | TPR-like | 4 | 2 |  |
| Fe,Mn superoxide dismutase (SOD), N-terminal domain | Fe,Mn superoxide dismutase (SOD), C-terminal domain | 4 | 3 |  |
| P-loop containing nucleoside triphosphate hydrolases | PAZ domain | 4 | 3 |  |
| Succinate dehydrogenase/fumarate reductase flavoprotein, catalytic domain | Succinate dehydrogenase/fumarate reductase flavoprotein C-terminal domain | 4 | 1 |  |
| (Phosphotyrosine protein) phosphatases II | E set domains | 4 | 2 |  |
| Nucleotidylyl transferase | Ribosomal protein L25-like | 4 | 2 |  |
| FMN-linked oxidoreductases | Alpha subunit of glutamate synthase, C-terminal domain | 4 | 4 |  |
| E set domains | RNA-binding domain, RBD | 4 | 1 |  |
| Glycoside hydrolase/deacetylase | Families 57/38 glycoside transferase middle domain | 4 | 2 |  |
| Cysteine-rich domain | NAD kinase/diacylglycerol kinase-like | 4 | 2 |  |
| ClpP/crotonase | ClpP/crotonase | 4 | 4 |  |
| C-terminal, gelsolin-like domain of Sec23/24 | VHP, Villin headpiece domain | 4 | 1 |  |
| Voltage-gated potassium channels | EF-hand | 4 | 4 |  |
| MurD-like peptide ligases, catalytic domain | MurD-like peptide ligases, peptide-binding domain | 4 | 3 |  |
| GAF domain-like | GAF domain-like | 4 | 3 |  |
| BAR/IMD domain-like | SH3-domain | 4 | 1 |  |
| Cysteine-rich domain | Cysteine-rich domain | 4 | 2 |  |
| Ribosomal protein S5 domain 2-like | Ribosomal protein S5 domain 2-like | 4 | 3 |  |
| RCC1/BLIP-II | RCC1/BLIP-II | 4 | 3 |  |
| P-loop containing nucleoside triphosphate hydrolases | Interferon-induced guanylate-binding protein 1 (GBP1), C-terminal domain | 4 | 3 |  |
| FAD/NAD(P)-binding domain | Succinate dehydrogenase/fumarate reductase flavoprotein C-terminal domain | 4 | 1 |  |
| Thioredoxin-like | FAD-dependent thiol oxidase | 4 | 1 |  |
| Obg GTP-binding protein N-terminal domain | P-loop containing nucleoside triphosphate hydrolases | 4 | 3 |  |
| Formate/glycerate dehydrogenase catalytic domain-like | ACT-like | 4 | 1 |  |
| Ubiquitin-like | Homeodomain-like | 4 | 1 |  |
| Elongation factor Ts (EF-Ts), dimerisation domain | Elongation factor Ts (EF-Ts), dimerisation domain | 4 | 2 |  |
| CBS-domain pair | CAD & PB1 domains | 4 | 2 |  |
| DNA repair protein MutS, domain II | P-loop containing nucleoside triphosphate hydrolases | 3 | 3 |  |
| beta-beta-alpha zinc fingers | P-loop containing nucleoside triphosphate hydrolases | 3 | 2 |  |
| Zinc beta-ribbon | Zinc beta-ribbon | 3 | 1 |  |
| E set domains | E set domains | 3 | 3 |  |
| Cysteine proteinases | Granulin repeat | 3 | 2 |  |
| N-terminal nucleophile aminohydrolases (Ntn hydrolases) | alpha-helical ferredoxin | 3 | 3 |  |
| Nucleic acid-binding proteins | GAD domain-like | 3 | 2 |  |
| UDP-Glycosyltransferase/glycogen phosphorylase | Ribosomal protein S5 domain 2-like | 3 | 2 |  |
| Bowman-Birk inhibitor, BBI | Bowman-Birk inhibitor, BBI | 3 | 2 |  |
| RuvA domain 2-like | Nucleic acid-binding proteins | 3 | 1 |  |
| FYVE/PHD zinc finger | Chromo domain-like | 3 | 2 |  |
| Thioredoxin-like | Cysteine-rich domain | 3 | 2 |  |
| Ribonuclease H-like | Eukaryotic type KH-domain (KH-domain type I) | 3 | 1 |  |
| HAD-like | Riboflavin kinase-like | 3 | 1 |  |
| DNA repair protein MutS, domain II | DNA repair protein MutS, domain III | 3 | 3 |  |
| Thioredoxin-like | "Winged helix" DNA-binding domain | 3 | 1 |  |
| 6-phosphogluconate dehydrogenase C-terminal domain-like | UDP-glucose/GDP-mannose dehydrogenase C-terminal domain | 3 | 1 |  |
| LDL receptor-like module | Mannose 6-phosphate receptor domain | 3 | 1 |  |
| PYP-like sensor domain (PAS domain) | F-box domain | 3 | 1 |  |
| Toll/Interleukin receptor TIR domain | P-loop containing nucleoside triphosphate hydrolases | 3 | 1 |  |
| Translation proteins | ThrRS/AlaRS common domain | 3 | 2 |  |
| DNase I-like | DNase I-like | 3 | 1 |  |
| Galactose oxidase, central domain | P-loop containing nucleoside triphosphate hydrolases | 3 | 1 |  |
| S-adenosylmethionine synthetase | S-adenosylmethionine synthetase | 3 | 1 |  |
| Concanavalin A-like lectins/glucanases | PH domain-like | 3 | 3 |  |
| Ribosomal protein S5 domain 2-like | Type II DNA topoisomerase | 3 | 2 |  |
| HAD-like | BRCT domain | 3 | 1 |  |
| F-box domain | HCP-like | 3 | 2 |  |
| WD40 repeat-like | DNase I-like | 3 | 3 |  |
| Ribonuclease H-like | Nucleic acid-binding proteins | 3 | 1 |  |
| P-loop containing nucleoside triphosphate hydrolases | Microbial and mitochondrial ADK, insert "zinc finger" domain | 3 | 1 |  |
| DNA-binding domain | YbaK/ProRS associated domain | 3 | 2 |  |
| Cyclophilin-like | RNA-binding domain, RBD | 3 | 2 |  |
| EF-hand | Mitochondrial carrier | 3 | 1 |  |
| Class II aaRS and biotin synthetases | C-terminal domain of ProRS | 3 | 2 |  |
| RING/U-box | Ran binding protein zinc finger-like | 3 | 1 |  |
| Hairpin loop containing domain-like | Protein kinase-like (PK-like) | 3 | 2 |  |
| Tex N-terminal region-like | Nucleic acid-binding proteins | 3 | 1 |  |
| 2Fe-2S ferredoxin-like | alpha-helical ferredoxin | 3 | 2 |  |
| TPR-like | SET domain | 3 | 2 |  |
| FGAM synthase PurL, linker domain | PurM N-terminal domain-like | 3 | 2 |  |
| Protein kinase-like (PK-like) | NTF2-like | 3 | 1 |  |
| Dom34/Pelota N-terminal domain-like | L30e-like | 3 | 1 |  |
| Class II aaRS and biotin synthetases | GAD domain-like | 3 | 2 |  |
| YjeF N-terminal domain-like | FMN-binding split barrel | 3 | 1 |  |
| POZ domain | POZ domain | 3 | 3 |  |
| Acyl-CoA dehydrogenase C-terminal domain-like | Acyl-CoA dehydrogenase C-terminal domain-like | 3 | 2 |  |
| N-terminal domain of adenylylcyclase associated protein, CAP | C-terminal domain of adenylylcyclase associated protein | 3 | 1 |  |
| Ribonuclease H-like | Ribonuclease H-like | 3 | 3 |  |
| Tudor/PWWP/MBT | FYVE/PHD zinc finger | 3 | 2 |  |
| Molybdenum cofactor biosynthesis proteins | MoeA C-terminal domain-like | 3 | 1 |  |
| PUA domain-like | Nucleotidylyl transferase | 3 | 1 |  |
| LEA14-like | LEA14-like | 3 | 2 |  |
| Dom34/Pelota N-terminal domain-like | Translational machinery components | 3 | 1 |  |
| ATP-dependent DNA ligase DNA-binding domain | Nucleic acid-binding proteins | 3 | 2 |  |
| ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase | Type II DNA topoisomerase | 3 | 2 |  |
| MoeA N-terminal region -like | MoeA C-terminal domain-like | 3 | 1 |  |
| UBA-like | PUG domain-like | 3 | 2 |  |
| PurS-like | PurM C-terminal domain-like | 3 | 2 |  |
| AraD/HMP-PK domain-like | HAD-like | 3 | 1 |  |
| HCP-like | HIT/MYND zinc finger-like | 3 | 2 |  |
| HAD-like | Glycerol-3-phosphate (1)-acyltransferase | 3 | 1 |  |
| PurM N-terminal domain-like | Class I glutamine amidotransferase-like | 3 | 2 |  |
| Alpha subunit of glutamate synthase, C-terminal domain | alpha-helical ferredoxin | 3 | 3 |  |
| Rad51 N-terminal domain-like | P-loop containing nucleoside triphosphate hydrolases | 3 | 1 |  |
| (Phosphotyrosine protein) phosphatases II | DNA ligase/mRNA capping enzyme, catalytic domain | 3 | 2 |  |
| F-box domain | Quinoprotein alcohol dehydrogenase-like | 3 | 1 |  |
| E set domains | CBS-domain pair | 3 | 2 |  |
| HIT/MYND zinc finger-like | Cysteine proteinases | 3 | 1 |  |
| PDZ domain-like | ClpP/crotonase | 3 | 2 |  |
| PLP-dependent transferases | MOSC N-terminal domain-like | 3 | 2 |  |
| Nucleic acid-binding proteins | SH2 domain | 3 | 1 |  |
| Retrovirus zinc finger-like domains | RING/U-box | 3 | 2 |  |
| PYP-like sensor domain (PAS domain) | Galactose oxidase, central domain | 3 | 1 |  |
| GST C-terminal domain-like | Nucleotidylyl transferase | 3 | 1 |  |
| Class II aaRS ABD-related | C-terminal domain of ProRS | 3 | 2 |  |
| E set domains | AMPKBI-like | 3 | 1 |  |
| TPR-like | Chaperone J-domain | 3 | 3 |  |
| WGR domain-like | ADP-ribosylation | 3 | 3 |  |
| FGAM synthase PurL, linker domain | PurM C-terminal domain-like | 3 | 2 |  |
| PurM C-terminal domain-like | Class I glutamine amidotransferase-like | 3 | 2 |  |
| PP2C-like | Protein kinase-like (PK-like) | 3 | 3 |  |
| DNA repair protein MutS, domain I | DNA repair protein MutS, domain III | 3 | 3 |  |
| PurS-like | PurM N-terminal domain-like | 3 | 2 |  |
| P-loop containing nucleoside triphosphate hydrolases | Hypothetical protein YjiA, C-terminal domain | 3 | 1 |  |
| Clavaminate synthase-like | beta-beta-alpha zinc fingers | 3 | 2 |  |
| NagB/RpiA/CoA transferase-like | D-ribose-5-phosphate isomerase (RpiA), lid domain | 3 | 1 |  |
| Ribosomal L27 protein-like | Eukaryotic type KH-domain (KH-domain type I) | 3 | 1 |  |
| Domain of poly(ADP-ribose) polymerase | ADP-ribosylation | 3 | 3 |  |
| Glutathione synthetase ATP-binding domain-like | Succinyl-CoA synthetase domains | 3 | 1 |  |
| Tropomyosin | Apolipoprotein A-I | 3 | 2 |  |
| Nucleotidyltransferase | Poly A polymerase C-terminal region-like | 3 | 2 |  |
| NAD(P)-binding Rossmann-fold domains | Succinyl-CoA synthetase domains | 3 | 1 |  |
| Homeodomain-like | "Winged helix" DNA-binding domain | 3 | 1 |  |
| RING/U-box | PUA domain-like | 3 | 3 |  |
| GST C-terminal domain-like | Ribosomal protein L25-like | 3 | 1 |  |
| PX domain | BAR/IMD domain-like | 3 | 2 |  |
| TPR-like | RNA-binding domain, RBD | 3 | 2 |  |
| Tudor/PWWP/MBT | SET domain | 3 | 2 |  |
| PUA domain-like | P-loop containing nucleoside triphosphate hydrolases | 3 | 1 |  |
| Molybdenum cofactor biosynthesis proteins | Molybdenum cofactor biosynthesis proteins | 3 | 1 |  |
| Mannose-binding lectins | Mannose-binding lectins | 3 | 3 |  |
| 2,3-Bisphosphoglycerate-independent phosphoglycerate mutase, substrate-binding domain | Alkaline phosphatase-like | 3 | 1 |  |
| ATP-dependent DNA ligase DNA-binding domain | DNA ligase/mRNA capping enzyme, catalytic domain | 3 | 2 |  |
| DNA/RNA polymerases | Lesion bypass DNA polymerase (Y-family), little finger domain | 3 | 2 |  |
| Oxidoreductase molybdopterin-binding domain | E set domains | 3 | 2 |  |
| MoeA N-terminal region -like | Molybdenum cofactor biosynthesis proteins | 3 | 1 |  |
| Osmotin, thaumatin-like protein | Protein kinase-like (PK-like) | 3 | 3 |  |
| Glutamine synthetase/guanido kinase | GatB/YqeY motif | 3 | 1 |  |
| DNA/RNA polymerases | Chromo domain-like | 3 | 3 |  |
| ThrRS/AlaRS common domain | Class II aaRS ABD-related | 3 | 2 |  |
| Chaperone J-domain | 4Fe-4S ferredoxins | 3 | 1 |  |
| RuvA domain 2-like | RuvA domain 2-like | 3 | 1 |  |
| Macro domain-like | CRAL/TRIO domain | 3 | 1 |  |
| Chaperone J-domain | Thioredoxin-like | 3 | 2 |  |
| F-box domain | TPR-like | 3 | 1 |  |
| WGR domain-like | Domain of poly(ADP-ribose) polymerase | 3 | 3 |  |
| Ankyrin repeat | Ankyrin repeat | 3 | 2 |  |
| P-loop containing nucleoside triphosphate hydrolases | Tropomyosin | 3 | 2 |  |
| "Winged helix" DNA-binding domain | E set domains | 3 | 2 |  |
| Dimeric alpha+beta barrel | Dimeric alpha+beta barrel | 3 | 1 |  |
| FMN-linked oxidoreductases | alpha-helical ferredoxin | 3 | 3 |  |
| LysM domain | LysM domain | 3 | 2 |  |
| PreATP-grasp domain | Single hybrid motif | 3 | 3 |  |
| Serpins | Serpins | 3 | 1 |  |
| N-terminal domain of MutM-like DNA repair proteins | S13-like H2TH domain | 3 | 2 |  |
| tRNA-binding arm | Class II aaRS and biotin synthetases | 3 | 2 |  |
| Acid proteases | Ribonuclease H-like | 3 | 3 |  |
| L9 N-domain-like | Ribosomal protein L9 C-domain | 3 | 1 |  |
| PurS-like | FGAM synthase PurL, linker domain | 3 | 2 |  |
| Clathrin heavy-chain terminal domain | ARM repeat | 3 | 3 |  |
| NAD-binding domain of HMG-CoA reductase | Substrate-binding domain of HMG-CoA reductase | 3 | 1 |  |
| PUA domain-like | Ribosomal protein S5 domain 2-like | 3 | 1 |  |
| ARID-like | HSP20-like chaperones | 3 | 1 |  |
| Prokaryotic type KH domain (KH-domain type II) | Ribosomal protein S3 C-terminal domain | 3 | 1 |  |
| TATA-box binding protein-like | TATA-box binding protein-like | 3 | 2 |  |
| RNA-binding domain, RBD | PWI domain | 2 | 1 |  |
| GST C-terminal domain-like | eEF1-gamma domain | 2 | 1 |  |
| Hypothetical protein SAV1430 | Fe-S cluster assembly (FSCA) domain-like | 2 | 1 |  |
| Methionyl-tRNA synthetase (MetRS), Zn-domain | Nucleotidylyl transferase | 2 | 2 |  |
| lambda repressor-like DNA-binding domains | Cyanase C-terminal domain | 2 | 1 |  |
| Thioredoxin-like | NHL repeat | 2 | 2 |  |
| Concanavalin A-like lectins/glucanases | Nucleotide-diphospho-sugar transferases | 2 | 1 |  |
| Kelch motif | Tropomyosin | 2 | 1 |  |
| Staphylococcal nuclease | Tudor/PWWP/MBT | 2 | 1 |  |
| PRP4-like | Functional domain of the splicing factor Prp18 | 2 | 2 |  |
| Calponin-homology domain, CH-domain | ARM repeat | 2 | 1 |  |
| Bromodomain | Bromodomain | 2 | 1 |  |
| SMAD/FHA domain | P-loop containing nucleoside triphosphate hydrolases | 2 | 1 |  |
| SNARE-like | P-loop containing nucleoside triphosphate hydrolases | 2 | 1 |  |
| Histone-fold | Histone-fold | 2 | 1 |  |
| Chaperone J-domain | RNA-binding domain, RBD | 2 | 1 |  |
| FYVE/PHD zinc finger | TPR-like | 2 | 1 |  |
| F-box domain | ApaG-like | 2 | 1 |  |
| PurM N-terminal domain-like | PurM N-terminal domain-like | 2 | 1 |  |
| HAD-like | Thioredoxin-like | 2 | 2 |  |
| ValRS/IleRS/LeuRS editing domain | tRNA-binding arm | 2 | 1 |  |
| Ribonuclease PH domain 2-like | Ribonuclease PH domain 2-like | 2 | 2 |  |
| eIF2alpha middle domain-like | eIF-2-alpha, C-terminal domain | 2 | 1 |  |
| Cysteine proteinases | Cysteine proteinases | 2 | 2 |  |
| PH domain-like | HMG-box | 2 | 1 |  |
| PreATP-grasp domain | PreATP-grasp domain | 2 | 2 |  |
| Staphylococcal nuclease | Staphylococcal nuclease | 2 | 1 |  |
| P-loop containing nucleoside triphosphate hydrolases | CYTH-like phosphatases | 2 | 2 |  |
| P-loop containing nucleoside triphosphate hydrolases | Macro domain-like | 2 | 2 |  |
| Urease, beta-subunit | Composite domain of metallo-dependent hydrolases | 2 | 2 |  |
| P-loop containing nucleoside triphosphate hydrolases | RNA-binding domain, RBD | 2 | 2 |  |
| UROD/MetE-like | UROD/MetE-like | 2 | 1 |  |
| NAD(P)-binding Rossmann-fold domains | Glutamyl tRNA-reductase dimerization domain | 2 | 1 |  |
| PUA domain-like | SWIB/MDM2 domain | 2 | 1 |  |
| Oxidoreductase molybdopterin-binding domain | Cytochrome b5-like heme/steroid binding domain | 2 | 1 |  |
| S-adenosyl-L-methionine-dependent methyltransferases | PLP-dependent transferases | 2 | 1 |  |
| UBA-like | S-adenosyl-L-methionine-dependent methyltransferases | 2 | 2 |  |
| Trypsin-like serine proteases | Acyl-CoA N-acyltransferases (Nat) | 2 | 1 |  |
| Alpha-L RNA-binding motif | Pseudouridine synthase | 2 | 2 |  |
| Myosin rod fragments | ARM repeat | 2 | 1 |  |
| P-loop containing nucleoside triphosphate hydrolases | RecA protein, C-terminal domain | 2 | 2 |  |
| Carbamoyl phosphate synthetase, small subunit N-terminal domain | Class I glutamine amidotransferase-like | 2 | 2 |  |
| Transcription factor IIA (TFIIA), alpha-helical domain | Transcription factor IIA (TFIIA), beta-barrel domain | 2 | 2 |  |
| FYVE/PHD zinc finger | SAICAR synthase-like | 2 | 2 |  |
| Oxidoreductase molybdopterin-binding domain | Ferredoxin reductase-like, C-terminal NADP-linked domain | 2 | 1 |  |
| C2 domain (Calcium/lipid-binding domain, CaLB) | Protein kinase-like (PK-like) | 2 | 1 |  |
| P-loop containing nucleoside triphosphate hydrolases | Myosin rod fragments | 2 | 1 |  |
| CorA soluble domain-like | Magnesium transport protein CorA, transmembrane region | 2 | 1 |  |
| Chaperone J-domain | Chaperone J-domain | 2 | 2 |  |
| Protein kinase-like (PK-like) | (Phosphotyrosine protein) phosphatases II | 2 | 1 |  |
| Hermes dimerisation domain | Ribonuclease H-like | 2 | 1 |  |
| alpha-helical ferredoxin | FAD/NAD(P)-binding domain | 2 | 2 |  |
| Glutamyl tRNA-reductase catalytic, N-terminal domain | Glutamyl tRNA-reductase dimerization domain | 2 | 1 |  |
| Domain of the SRP/SRP receptor G-proteins | Signal peptide-binding domain | 2 | 1 |  |
| F-box domain | Outer arm dynein light chain 1 | 2 | 2 |  |
| NSFL1 (p97 ATPase) cofactor p47, SEP domain | Ubiquitin-like | 2 | 2 |  |
| Class II aaRS and biotin synthetases | HD-domain/PDEase-like | 2 | 2 |  |
| Ran binding protein zinc finger-like | Translation proteins | 2 | 1 |  |
| Pseudouridine synthase | PUA domain-like | 2 | 1 |  |
| Ubiquitin-like | Cap-Gly domain | 2 | 2 |  |
| WD40 repeat-like | Quinoprotein alcohol dehydrogenase-like | 2 | 2 |  |
| POZ domain | Pentapeptide repeat-like | 2 | 1 |  |
| vWA-like | SPOC domain-like | 2 | 2 |  |
| Urease, gamma-subunit | Metallo-dependent hydrolases | 2 | 2 |  |
| P-loop containing nucleoside triphosphate hydrolases | Phosphoglycerate mutase-like | 2 | 2 |  |
| Plus3-like | CCCH zinc finger | 2 | 2 |  |
| N-terminal nucleophile aminohydrolases (Ntn hydrolases) | PRTase-like | 2 | 1 |  |
| Nucleotide-diphospho-sugar transferases | ARM repeat | 2 | 1 |  |
| Aminopeptidase/glucanase lid domain | Zn-dependent exopeptidases | 2 | 1 |  |
| NAC domain | beta-beta-alpha zinc fingers | 2 | 2 |  |
| Cytidine deaminase-like | Dihydrofolate reductase-like | 2 | 2 |  |
| SWIB/MDM2 domain | CCCH zinc finger | 2 | 2 |  |
| (Phosphotyrosine protein) phosphatases II | Nucleic acid-binding proteins | 2 | 1 |  |
| SWIB/MDM2 domain | eIF1-like | 2 | 1 |  |
| HAD-like | NTF2-like | 2 | 1 |  |
| Tetrahydrobiopterin biosynthesis enzymes-like | Tetrahydrobiopterin biosynthesis enzymes-like | 2 | 2 |  |
| Adenine nucleotide alpha hydrolases-like | Argininosuccinate synthetase, C-terminal domain | 2 | 2 |  |
| Ran binding protein zinc finger-like | P-loop containing nucleoside triphosphate hydrolases | 2 | 1 |  |
| Acid proteases | Chromo domain-like | 2 | 2 |  |
| PUG domain-like | Ubiquitin-like | 2 | 2 |  |
| Ribosomal protein S5 domain 2-like | Nucleic acid-binding proteins | 2 | 2 |  |
| Rhomboid-like | Ran binding protein zinc finger-like | 2 | 2 |  |
| GST C-terminal domain-like | Nucleic acid-binding proteins | 2 | 1 |  |
| Sec63 N-terminal domain-like | Sec63 N-terminal domain-like | 2 | 1 |  |
| NAC domain | NAC domain | 2 | 2 |  |
| RNA-binding domain, RBD | WW domain | 2 | 1 |  |
| Cytochrome b5-like heme/steroid binding domain | Ferredoxin reductase-like, C-terminal NADP-linked domain | 2 | 1 |  |
| Single hybrid motif | ClpP/crotonase | 2 | 2 |  |
| Rudiment single hybrid motif | ClpP/crotonase | 2 | 2 |  |
| LysM domain | Protein kinase-like (PK-like) | 2 | 1 |  |
| Ribonuclease PH domain 2-like | Nucleic acid-binding proteins | 2 | 2 |  |
| N-utilization substance G protein NusG, N-terminal domain | Translation proteins SH3-like domain | 2 | 1 |  |
| HD-domain/PDEase-like | ACT-like | 2 | 1 |  |
| FYVE/PHD zinc finger | Transducin (alpha subunit), insertion domain | 2 | 1 |  |
| Nucleotidylyl transferase | tRNA-binding arm | 2 | 1 |  |
| PapD-like | Ankyrin repeat | 2 | 2 |  |
| F-box domain | NTF2-like | 2 | 2 |  |
| F-box domain | WD40 repeat-like | 2 | 2 |  |
| Nucleoside hydrolase | Nucleoside hydrolase | 2 | 2 |  |
| RNA-binding domain, RBD | DPP6 N-terminal domain-like | 2 | 2 |  |
| NAD kinase/diacylglycerol kinase-like | NAD kinase/diacylglycerol kinase-like | 2 | 2 |  |
| Translation proteins | Translation proteins | 2 | 1 |  |
| BRCT domain | WGR domain-like | 2 | 2 |  |
| UDP-Glycosyltransferase/glycogen phosphorylase | UDP-Glycosyltransferase/glycogen phosphorylase | 2 | 2 |  |
| RNA-binding domain, RBD | ENTH/VHS domain | 2 | 1 |  |
| P-loop containing nucleoside triphosphate hydrolases | Prokaryotic type KH domain (KH-domain type II) | 2 | 2 |  |
| S-adenosyl-L-methionine-dependent methyltransferases | Putative methyltransferase TM0872, insert domain | 2 | 1 |  |
| ARM repeat | PH domain-like | 2 | 2 |  |
| AN1-like Zinc finger | AN1-like Zinc finger | 2 | 2 |  |
| N-terminal nucleophile aminohydrolases (Ntn hydrolases) | FAD/NAD(P)-binding domain | 2 | 2 |  |
| Nucleotidyltransferase | ACT-like | 2 | 1 |  |
| PH domain-like | Phospholipase D/nuclease | 2 | 1 |  |
| alpha-ketoacid dehydrogenase kinase, N-terminal domain | ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase | 2 | 1 |  |
| UDP-Glycosyltransferase/glycogen phosphorylase | GHMP Kinase, C-terminal domain | 2 | 1 |  |
| beta-sandwich domain of Sec23/24 | P-loop containing nucleoside triphosphate hydrolases | 2 | 1 |  |
| Glutathione synthetase ATP-binding domain-like | Glutathione synthetase ATP-binding domain-like | 2 | 2 |  |
| Nucleotidylyl transferase | An anticodon-binding domain of class I aminoacyl-tRNA synthetases | 2 | 1 |  |
| FGAM synthase PurL, linker domain | Class I glutamine amidotransferase-like | 2 | 1 |  |
| Nucleotidyltransferase | TGS-like | 2 | 1 |  |
| P-loop containing nucleoside triphosphate hydrolases | vWA-like | 2 | 1 |  |
| Nitrite and sulphite reductase 4Fe-4S domain-like | Nitrite and sulphite reductase 4Fe-4S domain-like | 2 | 1 |  |
| Rhodanese/Cell cycle control phosphatase | alpha/beta-Hydrolases | 2 | 1 |  |
| Heat shock protein 70kD (HSP70), C-terminal subdomain | Heat shock protein 70kD (HSP70), C-terminal subdomain | 2 | 1 |  |
| TPR-like | HSP20-like chaperones | 2 | 1 |  |
| Chaperone J-domain | Sec63 N-terminal domain-like | 2 | 1 |  |
| C2 domain (Calcium/lipid-binding domain, CaLB) | EF-hand | 2 | 2 |  |
| Agglutinin | Aerolisin/ETX pore-forming domain | 2 | 2 |  |
| Urease, gamma-subunit | Composite domain of metallo-dependent hydrolases | 2 | 2 |  |
| PYP-like sensor domain (PAS domain) | Homodimeric domain of signal transducing histidine kinase | 2 | 2 |  |
| Translation proteins SH3-like domain | Translation proteins SH3-like domain | 2 | 1 |  |
| UBA-like | Hect, E3 ligase catalytic domain | 2 | 1 |  |
| HAD-like | NHL repeat | 2 | 2 |  |
| Nucleic acid-binding proteins | eIF-2-alpha, C-terminal domain | 2 | 1 |  |
| P-loop containing nucleoside triphosphate hydrolases | D-aminoacid aminotransferase-like PLP-dependent enzymes | 2 | 1 |  |
| Class II aaRS and biotin synthetases | Putative anticodon-binding domain of alanyl-tRNA synthetase (AlaRS) | 2 | 1 |  |
| F-box domain | HIT/MYND zinc finger-like | 2 | 1 |  |
| Cytochrome b5-like heme/steroid binding domain | Riboflavin synthase domain-like | 2 | 1 |  |
| SMAD/FHA domain | PP2C-like | 2 | 2 |  |
| BRCT domain | ADP-ribosylation | 2 | 2 |  |
| PRTase-like | PRTase-like | 2 | 2 |  |
| FYSH domain | Hypothetical protein AF0491, middle domain | 2 | 1 |  |
| Insert subdomain of RNA polymerase alpha subunit | RBP11-like subunits of RNA polymerase | 2 | 1 |  |
| UBC-like | Endosomal sorting complex assembly domain | 2 | 1 |  |
| F-box domain | SMI1/KNR4-like | 2 | 1 |  |
| RmlC-like cupins | RmlC-like cupins | 2 | 1 |  |
| ISP transmembrane anchor | ISP domain | 2 | 1 |  |
| TPR-like | PH domain-like | 2 | 2 |  |
| 6-hydroxymethyl-7,8-dihydropterin pyrophosphokinase, HPPK | Dihydropteroate synthetase-like | 2 | 2 |  |
| Glutathione synthetase ATP-binding domain-like | ClpP/crotonase | 2 | 2 |  |
| BRCT domain | Domain of poly(ADP-ribose) polymerase | 2 | 2 |  |
| SNARE-like | Domain of the SRP/SRP receptor G-proteins | 2 | 1 |  |
| ARM repeat | POZ domain | 2 | 2 |  |
| Thioredoxin-like | ERP29 C domain-like | 2 | 1 |  |
| Tropomyosin | Tropomyosin | 2 | 1 |  |
| Chaperone J-domain | ARM repeat | 2 | 2 |  |
| Ubiquitin-like | Hect, E3 ligase catalytic domain | 2 | 1 |  |
| Translation initiation factor IF3, N-terminal domain | Translation initiation factor IF3, C-terminal domain | 2 | 1 |  |
| PUA domain-like | eIF1-like | 2 | 1 |  |
| SAP domain | DNase I-like | 2 | 1 |  |
| Mechanosensitive channel protein MscS (YggB), transmembrane region | Sm-like ribonucleoproteins | 2 | 1 |  |
| E set domains | Riboflavin synthase domain-like | 2 | 1 |  |
| Eukaryotic DNA topoisomerase I, N-terminal DNA-binding fragment | DNA breaking-rejoining enzymes | 2 | 1 |  |
| Starch-binding domain-like | Starch-binding domain-like | 2 | 2 |  |
| TPR-like | SMR domain-like | 2 | 2 |  |
| Alpha subunit of glutamate synthase, C-terminal domain | FAD/NAD(P)-binding domain | 2 | 2 |  |
| Type II DNA topoisomerase | GyrA/ParC C-terminal domain-like | 2 | 1 |  |
| Putative anticodon-binding domain of alanyl-tRNA synthetase (AlaRS) | Translation proteins | 2 | 1 |  |
| Methionyl-tRNA synthetase (MetRS), Zn-domain | Anticodon-binding domain of a subclass of class I aminoacyl-tRNA synthetases | 2 | 2 |  |
| Urease, gamma-subunit | Urease, beta-subunit | 2 | 2 |  |
| Concanavalin A-like lectins/glucanases | WD40 repeat-like | 2 | 2 |  |
| Tryptophan synthase beta subunit-like PLP-dependent enzymes | ACT-like | 2 | 2 |  |
| Actin-crosslinking proteins | (Trans)glycosidases | 2 | 1 |  |
| Acetyl-CoA synthetase-like | ACP-like | 2 | 2 |  |
| Oxidoreductase molybdopterin-binding domain | Riboflavin synthase domain-like | 2 | 1 |  |
| FYVE/PHD zinc finger | GroEL apical domain-like | 2 | 2 |  |
| Anticodon-binding domain of a subclass of class I aminoacyl-tRNA synthetases | Staphylococcal nuclease | 2 | 2 |  |
| Cyclophilin-like | TPR-like | 2 | 1 |  |
| Methylglyoxal synthase-like | Cytidine deaminase-like | 2 | 2 |  |
| Galactose-binding domain-like | Galactose mutarotase-like | 2 | 2 |  |
| PRTase-like | Ribulose-phoshate binding barrel | 2 | 1 |  |
| Ribosomal protein S5 domain 2-like | Eukaryotic type KH-domain (KH-domain type I) | 2 | 2 |  |
| POZ domain | RNI-like | 2 | 1 |  |
| Phosphoglycerate mutase-like | Phosphoglycerate mutase-like | 2 | 1 |  |
| Taf5 N-terminal domain-like | WD40 repeat-like | 2 | 1 |  |
| PX domain | EreA/ChaN-like | 2 | 1 |  |
| PreATP-grasp domain | ClpP/crotonase | 2 | 2 |  |
| beta-Galactosidase/glucuronidase domain | beta-Galactosidase/glucuronidase domain | 2 | 2 |  |
| Arp2/3 complex subunits | Arp2/3 complex subunits | 2 | 2 |  |
| Starch-binding domain-like | Phosphoglycerate mutase-like | 2 | 2 |  |
| FMN-linked oxidoreductases | FAD/NAD(P)-binding domain | 2 | 2 |  |
| Anticodon-binding domain of a subclass of class I aminoacyl-tRNA synthetases | tRNA-binding arm | 2 | 1 |  |
| Calponin-homology domain, CH-domain | EB1 dimerisation domain-like | 2 | 2 |  |
| Cysteine proteinases | PF0523-like | 2 | 2 |  |
| FYVE/PHD zinc finger | CCCH zinc finger | 2 | 2 |  |
| Agglutinin | Agglutinin | 2 | 2 |  |
| beta-Galactosidase/glucuronidase domain | (Trans)glycosidases | 2 | 2 |  |
| C2 domain (Calcium/lipid-binding domain, CaLB) | vWA-like | 2 | 2 |  |
| RING/U-box | Cyclophilin-like | 2 | 2 |  |
| PRP4-like | WD40 repeat-like | 2 | 1 |  |
| Surp module (SWAP domain) | ENTH/VHS domain | 2 | 1 |  |
| Nucleic acid-binding proteins | "Winged helix" DNA-binding domain | 2 | 2 |  |
| Surp module (SWAP domain) | Surp module (SWAP domain) | 2 | 2 |  |
| GYF domain | CCCH zinc finger | 2 | 2 |  |
| Nitrite/Sulfite reductase N-terminal domain-like | Nitrite and sulphite reductase 4Fe-4S domain-like | 2 | 1 |  |
| E set domains | Cytochrome b5-like heme/steroid binding domain | 2 | 1 |  |
| Chaperone J-domain | beta-beta-alpha zinc fingers | 2 | 1 |  |
| UraD-Like | Transthyretin (synonym: prealbumin) | 2 | 2 |  |
| Urease, beta-subunit | Metallo-dependent hydrolases | 2 | 2 |  |
| HMA, heavy metal-associated domain | Cu,Zn superoxide dismutase-like | 2 | 1 |  |
| Carbamate kinase-like | Acyl-CoA N-acyltransferases (Nat) | 2 | 2 |  |
| SBT domain | Ankyrin repeat | 2 | 1 |  |
| F-box domain | Calcium-dependent phosphotriesterase | 2 | 1 |  |
| HIT/MYND zinc finger-like | Creatinase/aminopeptidase | 2 | 1 |  |
| SMI1/KNR4-like | ApaG-like | 2 | 1 |  |
| P-loop containing nucleoside triphosphate hydrolases | Helical scaffold and wing domains of SecA | 2 | 2 |  |
| Pre-protein crosslinking domain of SecA | Helical scaffold and wing domains of SecA | 2 | 2 |  |
| Bactericidal permeability-increasing protein, BPI | Bactericidal permeability-increasing protein, BPI | 2 | 2 |  |
| Galactose-binding domain-like | beta-Galactosidase/glucuronidase domain | 2 | 2 |  |
| RING/U-box | UBA-like | 2 | 2 |  |
| N-terminal nucleophile aminohydrolases (Ntn hydrolases) | SIS domain | 2 | 1 |  |
| 4Fe-4S ferredoxins | Metallo-hydrolase/oxidoreductase | 2 | 1 |  |
| PurM C-terminal domain-like | PurM C-terminal domain-like | 2 | 1 |  |
| Thioredoxin-like | eEF1-gamma domain | 2 | 1 |  |
| Nitrite/Sulfite reductase N-terminal domain-like | Nitrite/Sulfite reductase N-terminal domain-like | 2 | 1 |  |
| Cryptochrome/photolyase, N-terminal domain | alpha/beta-Hydrolases | 2 | 1 |  |
| TPR-like | "Winged helix" DNA-binding domain | 2 | 1 |  |
| DNA repair protein MutS, domain I | DNA repair protein MutS, domain II | 2 | 2 |  |
| Translation initiation factor 2 beta, aIF2beta, N-terminal domain | ARM repeat | 2 | 1 |  |
| Macro domain-like | Zn-dependent exopeptidases | 2 | 2 |  |
| S-adenosyl-L-methionine-dependent methyltransferases | Formin homology 2 domain (FH2 domain) | 2 | 2 |  |
| P-loop containing nucleoside triphosphate hydrolases | HRDC-like | 2 | 2 |  |
| Starch-binding domain-like | P-loop containing nucleoside triphosphate hydrolases | 2 | 2 |  |
| WW domain | S-adenosyl-L-methionine-dependent methyltransferases | 2 | 1 |  |
| (Phosphotyrosine protein) phosphatases II | NAD kinase/diacylglycerol kinase-like | 2 | 1 |  |
| R1 subunit of ribonucleotide reductase, N-terminal domain | PFL-like glycyl radical enzymes | 2 | 1 |  |
| Ribonuclease PH domain 2-like | Eukaryotic type KH-domain (KH-domain type I) | 2 | 2 |  |
| Class II aaRS and biotin synthetases | Translation proteins | 2 | 1 |  |
| Protein kinase-like (PK-like) | beta-lactamase/transpeptidase-like | 2 | 2 |  |
| Nucleic acid-binding proteins | eIF2alpha middle domain-like | 2 | 1 |  |
| Concanavalin A-like lectins/glucanases | BEACH domain | 2 | 2 |  |
| PUA domain-like | S-adenosyl-L-methionine-dependent methyltransferases | 2 | 2 |  |
| TAZ domain | TAZ domain | 2 | 1 |  |
| L30e-like | alpha/beta knot | 2 | 1 |  |
| GroEL-intermediate domain like | SAICAR synthase-like | 2 | 1 |  |
| Chaperone J-domain | E set domains | 2 | 1 |  |
| GYF domain | SET domain | 2 | 2 |  |
| Zinc-binding domain of translation initiation factor 2 beta | ARM repeat | 2 | 1 |  |
| Glutathione synthetase ATP-binding domain-like | Phosphoglycerate mutase-like | 2 | 1 |  |
| PurS-like | Class I glutamine amidotransferase-like | 2 | 1 |  |
| Galactose-binding domain-like | NAD(P)-binding Rossmann-fold domains | 2 | 1 |  |
| Restriction endonuclease-like | RuvA domain 2-like | 2 | 2 |  |
| P-loop containing nucleoside triphosphate hydrolases | Pre-protein crosslinking domain of SecA | 2 | 2 |  |
| E set domains | Ferredoxin reductase-like, C-terminal NADP-linked domain | 2 | 1 |  |
| ARM repeat | UBA-like | 2 | 1 |  |
| Clavaminate synthase-like | RING/U-box | 2 | 2 |  |
| POZ domain | Quinoprotein alcohol dehydrogenase-like | 2 | 1 |  |
| TGS-like | ACT-like | 2 | 1 |  |
| BRCT domain | FYVE/PHD zinc finger | 2 | 2 |  |
| Putative anticodon-binding domain of alanyl-tRNA synthetase (AlaRS) | ThrRS/AlaRS common domain | 2 | 1 |  |
| Nucleoside phosphorylase/phosphoribosyltransferase N-terminal domain | Nucleoside phosphorylase/phosphoribosyltransferase catalytic domain | 2 | 2 |  |
| RNI-like | Outer arm dynein light chain 1 | 2 | 2 |  |
| Glutamyl tRNA-reductase catalytic, N-terminal domain | NAD(P)-binding Rossmann-fold domains | 2 | 1 |  |
| Ran binding protein zinc finger-like | EF-Tu/eEF-1alpha/eIF2-gamma C-terminal domain | 2 | 1 |  |
| DNase I-like | EF-hand | 2 | 1 |  |
| HD-domain/PDEase-like | TGS-like | 2 | 1 |  |
| RNA-binding domain, RBD | Surp module (SWAP domain) | 2 | 1 |  |
| Arabinanase/levansucrase/invertase | Nucleotide-diphospho-sugar transferases | 2 | 1 |  |
| Aconitase iron-sulfur domain | LeuD/IlvD-like | 2 | 1 |  |
| Putative DNA-binding domain | Putative DNA-binding domain | 1 | 1 |  |
| Putative isomerase YbhE | WD40 repeat-like | 1 | 1 |  |
| Nucleic acid-binding proteins | UBA-like | 1 | 1 |  |
| DNA-binding domain | P-loop containing nucleoside triphosphate hydrolases | 1 | 1 |  |
| Eukaryotic type KH-domain (KH-domain type I) | Retrovirus zinc finger-like domains | 1 | 1 |  |
| Tricorn protease domain 2 | ARM repeat | 1 | 1 |  |
| NAD(P)-binding Rossmann-fold domains | 1-deoxy-D-xylulose-5-phosphate reductoisomerase, C-terminal domain | 1 | 1 |  |
| Ribonuclease H-like | RNI-like | 1 | 1 |  |
| UBA-like | Thioredoxin-like | 1 | 1 |  |
| POZ domain | YVTN repeat-like/Quinoprotein amine dehydrogenase | 1 | 1 |  |
| DNA/RNA polymerases | F-box domain | 1 | 1 |  |
| F-box domain | Tricorn protease domain 2 | 1 | 1 |  |
| Nucleic acid-binding proteins | TPR-like | 1 | 1 |  |
| Histone-fold | ARM repeat | 1 | 1 |  |
| UBA-like | NSFL1 (p97 ATPase) cofactor p47, SEP domain | 1 | 1 |  |
| L-aspartase-like | Class II aaRS ABD-related | 1 | 1 |  |
| Histone-fold | F-box domain | 1 | 1 |  |
| F-box domain | Putative isomerase YbhE | 1 | 1 |  |
| ARM repeat | FKBP12-rapamycin-binding domain of FKBP-rapamycin-associated protein (FRAP) | 1 | 1 |  |
| TATA-box binding protein-like | DNA-glycosylase | 1 | 1 |  |
| Acyl-CoA binding protein | Cysteine proteinases | 1 | 1 |  |
| BSD domain-like | BSD domain-like | 1 | 1 |  |
| Tropomyosin | Mitotic arrest deficient-like 1, Mad1 | 1 | 1 |  |
| Clavaminate synthase-like | Protein kinase-like (PK-like) | 1 | 1 |  |
| Dihydrofolate reductase-like | Thymidylate synthase/dCMP hydroxymethylase | 1 | 1 |  |
| Thiamin diphosphate-binding fold (THDP-binding) | Enolase C-terminal domain-like | 1 | 1 |  |
| WD40 repeat-like | SNARE fusion complex | 1 | 1 |  |
| Aspartate/glutamate racemase | Aspartate/glutamate racemase | 1 | 1 |  |
| ARM repeat | Concanavalin A-like lectins/glucanases | 1 | 1 |  |
| ARID-like | RING/U-box | 1 | 1 |  |
| Fumarylacetoacetate hydrolase, FAH, N-terminal domain | FAH | 1 | 1 |  |
| Cullin repeat-like | Homeodomain-like | 1 | 1 |  |
| DHS-like NAD/FAD-binding domain | Enolase N-terminal domain-like | 1 | 1 |  |
| EGF/Laminin | EGF/Laminin | 1 | 1 |  |
| beta-beta-alpha zinc fingers | RNI-like | 1 | 1 |  |
| CHY zinc finger-like | CHY zinc finger-like | 1 | 1 |  |
| Leukotriene A4 hydrolase N-terminal domain | ARM repeat | 1 | 1 |  |
| Anticodon-binding domain of a subclass of class I aminoacyl-tRNA synthetases | Nucleic acid-binding proteins | 1 | 1 |  |
| Glucocorticoid receptor-like (DNA-binding domain) | WGR domain-like | 1 | 1 |  |
| DUSP-like | Ubiquitin-like | 1 | 1 |  |
| Nucleic acid-binding proteins | S-adenosyl-L-methionine-dependent methyltransferases | 1 | 1 |  |
| BRCT domain | PsbU/PolX domain-like | 1 | 1 |  |
| GYF domain | F-box domain | 1 | 1 |  |
| Protein kinase-like (PK-like) | Ribonuclease H-like | 1 | 1 |  |
| The spindle assembly checkpoint protein mad2 | The spindle assembly checkpoint protein mad2 | 1 | 1 |  |
| ARM repeat | alpha/beta knot | 1 | 1 |  |
| Probable bacterial effector-binding domain | Probable bacterial effector-binding domain | 1 | 1 |  |
| beta-beta-alpha zinc fingers | L domain-like | 1 | 1 |  |
| cAMP-binding domain-like | Protein kinase-like (PK-like) | 1 | 1 |  |
| Second domain of FERM | P-loop containing nucleoside triphosphate hydrolases | 1 | 1 |  |
| UBC-like | Class II aaRS ABD-related | 1 | 1 |  |
| Mitochondrial carrier | Mitochondrial carrier | 1 | 1 |  |
| BRCT domain | post-AAA+ oligomerization domain-like | 1 | 1 |  |
| Polynucleotide phosphorylase/guanosine pentaphosphate synthase (PNPase/GPSI), domain 3 | Nucleic acid-binding proteins | 1 | 1 |  |
| EF-hand | Calponin-homology domain, CH-domain | 1 | 1 |  |
| 4Fe-4S ferredoxins | Formate dehydrogenase/DMSO reductase, domains 1-3 | 1 | 1 |  |
| Metallo-dependent hydrolases | Glutamine synthetase, N-terminal domain | 1 | 1 |  |
| Tricorn protease domain 2 | alpha/beta-Hydrolases | 1 | 1 |  |
| PreATP-grasp domain | Methylglyoxal synthase-like | 1 | 1 |  |
| WD40 repeat-like | Bromodomain | 1 | 1 |  |
| Tudor/PWWP/MBT | DNA repair protein MutS, domain III | 1 | 1 |  |
| DEK C-terminal domain | SWIB/MDM2 domain | 1 | 1 |  |
| FAD/NAD(P)-binding domain | 4Fe-4S ferredoxins | 1 | 1 |  |
| Acetyl-CoA synthetase-like | Heme-dependent catalase-like | 1 | 1 |  |
| UBC-like | Class II aaRS and biotin synthetases | 1 | 1 |  |
| Voltage-gated potassium channels | Formin homology 2 domain (FH2 domain) | 1 | 1 |  |
| Acetyl-CoA synthetase-like | Trimeric LpxA-like enzymes | 1 | 1 |  |
| SAP domain | ADP-ribosylation | 1 | 1 |  |
| Nucleic acid-binding proteins | BRCA2 tower domain | 1 | 1 |  |
| alpha-helical ferredoxin | Nucleotide-binding domain | 1 | 1 |  |
| Second domain of FERM | Prismane protein-like | 1 | 1 |  |
| Homeodomain-like | L domain-like | 1 | 1 |  |
| Nqo1 FMN-binding domain-like | Nqo1C-terminal domain-like | 1 | 1 |  |
| Nqo1 middle domain-like | Nqo1C-terminal domain-like | 1 | 1 |  |
| MurE/MurF N-terminal domain | MurD-like peptide ligases, peptide-binding domain | 1 | 1 |  |
| Ubiquitin-like | L domain-like | 1 | 1 |  |
| Glyceraldehyde-3-phosphate dehydrogenase-like, C-terminal domain | 1-deoxy-D-xylulose-5-phosphate reductoisomerase, C-terminal domain | 1 | 1 |  |
| Zn-dependent exopeptidases | Carboxypeptidase regulatory domain-like | 1 | 1 |  |
| Metallo-hydrolase/oxidoreductase | ATP-dependent DNA ligase DNA-binding domain | 1 | 1 |  |
| Hypothetical protein PA1324 | Cna protein B-type domain | 1 | 1 |  |
| RNA-binding domain, RBD | Clavaminate synthase-like | 1 | 1 |  |
| RNI-like | Glutathione synthetase ATP-binding domain-like | 1 | 1 |  |
| DNA repair protein MutS, domain I | DNA repair protein MutS, domain I | 1 | 1 |  |
| POZ domain | WD40 repeat-like | 1 | 1 |  |
| DNA-binding domain | L domain-like | 1 | 1 |  |
| YgbK-like | Aldolase | 1 | 1 |  |
| N-terminal nucleophile aminohydrolases (Ntn hydrolases) | Nucleotide-binding domain | 1 | 1 |  |
| alpha-helical ferredoxin | Glucocorticoid receptor-like (DNA-binding domain) | 1 | 1 |  |
| Kelch motif | S-adenosyl-L-methionine-dependent methyltransferases | 1 | 1 |  |
| DNA ligase/mRNA capping enzyme, catalytic domain | BRCT domain | 1 | 1 |  |
| beta-Galactosidase/glucuronidase domain | Galactose mutarotase-like | 1 | 1 |  |
| Oxygen-evolving enhancer protein 3, | Cyclophilin-like | 1 | 1 |  |
| TAF(II)230 TBP-binding fragment | Bromodomain | 1 | 1 |  |
| Putative DNA-binding domain | Class II aaRS and biotin synthetases | 1 | 1 |  |
| Nucleotidylyl transferase | Nucleic acid-binding proteins | 1 | 1 |  |
| Arginyl-tRNA synthetase (ArgRS), N-terminal 'additional' domain | Nucleotidylyl transferase | 1 | 1 |  |
| BRCT domain | DNA/RNA polymerases | 1 | 1 |  |
| Putative isomerase YbhE | RING/U-box | 1 | 1 |  |
| EF-hand | PLC-like phosphodiesterases | 1 | 1 |  |
| WD40 repeat-like | TPR-like | 1 | 1 |  |
| ARM repeat | alpha/beta-Hydrolases | 1 | 1 |  |
| beta-sandwich domain of Sec23/24 | WD40 repeat-like | 1 | 1 |  |
| Cysteine proteinases | Cytochrome P450 | 1 | 1 |  |
| Ribosome inactivating proteins (RIP) | Cysteine proteinases | 1 | 1 |  |
| F-box domain | Tricorn protease N-terminal domain | 1 | 1 |  |
| GAF domain-like | CAD & PB1 domains | 1 | 1 |  |
| SAP domain | RNA-binding domain, RBD | 1 | 1 |  |
| EF-hand | RING/U-box | 1 | 1 |  |
| Fucose-specific lectin | Fucose-specific lectin | 1 | 1 |  |
| RNI-like | Ubiquitin-like | 1 | 1 |  |
| RNI-like | Mannose-binding lectins | 1 | 1 |  |
| CBS-domain pair | Inosine monophosphate dehydrogenase (IMPDH) | 1 | 1 |  |
| HSP20-like chaperones | HSP20-like chaperones | 1 | 1 |  |
| Amidase signature (AS) enzymes | Amidase signature (AS) enzymes | 1 | 1 |  |
| Fe-S cluster assembly (FSCA) domain-like | P-loop containing nucleoside triphosphate hydrolases | 1 | 1 |  |
| RING/U-box | RNA-binding domain, RBD | 1 | 1 |  |
| Clathrin heavy-chain terminal domain | Protein kinase-like (PK-like) | 1 | 1 |  |
| MIT domain | P-loop containing nucleoside triphosphate hydrolases | 1 | 1 |  |
| F-box domain | (Phosphotyrosine protein) phosphatases II | 1 | 1 |  |
| Chaperone J-domain | CSL zinc finger | 1 | 1 |  |
| BRCT domain | Lesion bypass DNA polymerase (Y-family), little finger domain | 1 | 1 |  |
| Second domain of FERM | PH domain-like | 1 | 1 |  |
| SSo0622-like | Kelch motif | 1 | 1 |  |
| Nucleotidylyl transferase | Alpha-L RNA-binding motif | 1 | 1 |  |
| Multidrug efflux transporter AcrB transmembrane domain | Multidrug efflux transporter AcrB transmembrane domain | 1 | 1 |  |
| ACP-like | Trimeric LpxA-like enzymes | 1 | 1 |  |
| UBC-like | Protein kinase-like (PK-like) | 1 | 1 |  |
| SufE/NifU | BolA-like | 1 | 1 |  |
| F-box domain | Actin-like ATPase domain | 1 | 1 |  |
| CoA-dependent acyltransferases | CoA-dependent acyltransferases | 1 | 1 |  |
| Protein kinase-like (PK-like) | Thioredoxin-like | 1 | 1 |  |
| ISP domain | Chlorophyll a-b binding protein | 1 | 1 |  |
| Thioredoxin-like | Six-hairpin glycosidases | 1 | 1 |  |
| FAD-linked reductases, C-terminal domain | 4Fe-4S ferredoxins | 1 | 1 |  |
| GroEL-intermediate domain like | GroEL-intermediate domain like | 1 | 1 |  |
| Elongation factor TFIIS domain 2 | Zinc beta-ribbon | 1 | 1 |  |
| Class II aaRS and biotin synthetases | Anticodon-binding domain of PheRS | 1 | 1 |  |
| Metallo-hydrolase/oxidoreductase | Metallo-hydrolase/oxidoreductase | 1 | 1 |  |
| 6-phosphogluconate dehydrogenase C-terminal domain-like | Aldolase | 1 | 1 |  |
| Chromo domain-like | Acyl-CoA N-acyltransferases (Nat) | 1 | 1 |  |
| Tudor/PWWP/MBT | RNA-binding domain, RBD | 1 | 1 |  |
| RNI-like | ARM repeat | 1 | 1 |  |
| ARM repeat | SH3-domain | 1 | 1 |  |
| Class I glutamine amidotransferase-like | GMP synthetase C-terminal dimerisation domain | 1 | 1 |  |
| Ribonuclease H-like | F-box domain | 1 | 1 |  |
| Metalloproteases ("zincins"), catalytic domain | ARM repeat | 1 | 1 |  |
| ACP-like | Heme-dependent catalase-like | 1 | 1 |  |
| HIT-like | HIT-like | 1 | 1 |  |
| Ubiquitin-like | Protein kinase-like (PK-like) | 1 | 1 |  |
| FAD/NAD(P)-binding domain | S-adenosyl-L-methionine-dependent methyltransferases | 1 | 1 |  |
| Carbamate kinase-like | DNA-binding pseudobarrel domain | 1 | 1 |  |
| Metallo-hydrolase/oxidoreductase | Nucleic acid-binding proteins | 1 | 1 |  |
| Eukaryotic type KH-domain (KH-domain type I) | LigT-like | 1 | 1 |  |
| P-loop containing nucleoside triphosphate hydrolases | RuvA domain 2-like | 1 | 1 |  |
| Interferon-induced guanylate-binding protein 1 (GBP1), C-terminal domain | Tropomyosin | 1 | 1 |  |
| (Trans)glycosidases | Chitinase insertion domain | 1 | 1 |  |
| Trimeric LpxA-like enzymes | Trimeric LpxA-like enzymes | 1 | 1 |  |
| Riboflavin synthase domain-like | Riboflavin synthase domain-like | 1 | 1 |  |
| Nucleotide-diphospho-sugar transferases | Nucleotide-diphospho-sugar transferases | 1 | 1 |  |
| Enolase C-terminal domain-like | alpha/beta-Hydrolases | 1 | 1 |  |
| FAD/NAD(P)-binding domain | Trimeric LpxA-like enzymes | 1 | 1 |  |
| "Winged helix" DNA-binding domain | Lumazine synthase | 1 | 1 |  |
| Translation proteins | Nucleotide-diphospho-sugar transferases | 1 | 1 |  |
| SPOC domain-like | C-terminal domain of Ku80 | 1 | 1 |  |
| F-box domain | ARM repeat | 1 | 1 |  |
| PreATP-grasp domain | Carbamoyl phosphate synthetase, large subunit connection domain | 1 | 1 |  |
| Cation efflux protein cytoplasmic domain-like | Cation efflux protein cytoplasmic domain-like | 1 | 1 |  |
| Glucocorticoid receptor-like (DNA-binding domain) | beta-sandwich domain of Sec23/24 | 1 | 1 |  |
| ACT-like | Formyltransferase | 1 | 1 |  |
| PP2C-like | cAMP-binding domain-like | 1 | 1 |  |
| Glutathione synthetase ATP-binding domain-like | N5-CAIR mutase (phosphoribosylaminoimidazole carboxylase, PurE) | 1 | 1 |  |
| SMAD/FHA domain | BRCT domain | 1 | 1 |  |
| CAD & PB1 domains | UBA-like | 1 | 1 |  |
| Ribose/Galactose isomerase RpiB/AlsB | RmlC-like cupins | 1 | 1 |  |
| Periplasmic binding protein-like II | GlnB-like | 1 | 1 |  |
| P-loop containing nucleoside triphosphate hydrolases | Prismane protein-like | 1 | 1 |  |
| MurE/MurF N-terminal domain | MurD-like peptide ligases, catalytic domain | 1 | 1 |  |
| Enolase N-terminal domain-like | alpha/beta-Hydrolases | 1 | 1 |  |
| Cap-Gly domain | RNI-like | 1 | 1 |  |
| RING/U-box | Cytochrome P450 | 1 | 1 |  |
| Alpha-L RNA-binding motif | S-adenosyl-L-methionine-dependent methyltransferases | 1 | 1 |  |
| ACP-like | ACP-like | 1 | 1 |  |
| Arginyl-tRNA synthetase (ArgRS), N-terminal 'additional' domain | Anticodon-binding domain of a subclass of class I aminoacyl-tRNA synthetases | 1 | 1 |  |
| HMG-box | HMG-box | 1 | 1 |  |
| Outer arm dynein light chain 1 | Protein kinase-like (PK-like) | 1 | 1 |  |
| Obg GTP-binding protein N-terminal domain | Obg GTP-binding protein C-terminal domain | 1 | 1 |  |
| CCCH zinc finger | HIT-like | 1 | 1 |  |
| ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase | RING/U-box | 1 | 1 |  |
| ARM repeat | FabD/lysophospholipase-like | 1 | 1 |  |
| Lysozyme-like | Lysozyme-like | 1 | 1 |  |
| alpha/beta-Hydrolases | Ribosomal protein S10 | 1 | 1 |  |
| F-box domain | "Winged helix" DNA-binding domain | 1 | 1 |  |
| Class I glutamine amidotransferase-like | Adenine nucleotide alpha hydrolases-like | 1 | 1 |  |
| TAF(II)230 TBP-binding fragment | Ubiquitin-like | 1 | 1 |  |
| Conserved domain common to transcription factors TFIIS, elongin A, CRSP70 | Zinc beta-ribbon | 1 | 1 |  |
| Chelatase | Chlorophyll a-b binding protein | 1 | 1 |  |
| Cytochrome c | Cytochrome c1 subunit of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase), transmembrane anchor | 1 | 1 |  |
| MOSC N-terminal domain-like | PK beta-barrel domain-like | 1 | 1 |  |
| Class II aaRS and biotin synthetases | DNA-binding domain | 1 | 1 |  |
| RNI-like | WRKY DNA-binding domain | 1 | 1 |  |
| Translation proteins | PRC-barrel domain | 1 | 1 |  |
| SAP domain | Domain of poly(ADP-ribose) polymerase | 1 | 1 |  |
| Alpha subunit of glutamate synthase, C-terminal domain | Nucleotide-binding domain | 1 | 1 |  |
| P-loop containing nucleoside triphosphate hydrolases | Epsilon subunit of F1F0-ATP synthase N-terminal domain | 1 | 1 |  |
| Tubulin nucleotide-binding domain-like | Histone H3 K4-specific methyltransferase SET7/9 N-terminal domain | 1 | 1 |  |
| Galactose mutarotase-like | Starch-binding domain-like | 1 | 1 |  |
| Metallo-hydrolase/oxidoreductase | DNA ligase/mRNA capping enzyme, catalytic domain | 1 | 1 |  |
| Conserved domain common to transcription factors TFIIS, elongin A, CRSP70 | Elongation factor TFIIS domain 2 | 1 | 1 |  |
| Voltage-gated potassium channels | Periplasmic binding protein-like II | 1 | 1 |  |
| Macro domain-like | Macro domain-like | 1 | 1 |  |
| DNA polymerase beta, N-terminal domain-like | Nucleotidyltransferase | 1 | 1 |  |
| IlvD/EDD N-terminal domain-like | LeuD/IlvD-like | 1 | 1 |  |
| S15/NS1 RNA-binding domain | Class II aaRS and biotin synthetases | 1 | 1 |  |
| F-box domain | YVTN repeat-like/Quinoprotein amine dehydrogenase | 1 | 1 |  |
| Cysteine proteinases | Calpain large subunit, middle domain (domain III) | 1 | 1 |  |
| F-box domain | YWTD domain | 1 | 1 |  |
| alpha/beta-Hydrolases | P-loop containing nucleoside triphosphate hydrolases | 1 | 1 |  |
| Cna protein B-type domain | Cna protein B-type domain | 1 | 1 |  |
| PRC-barrel domain | PRC-barrel domain | 1 | 1 |  |
| YjgF-like | YjgF-like | 1 | 1 |  |
| FKBP-like | Rhodanese/Cell cycle control phosphatase | 1 | 1 |  |
| Protein prenylyltransferase | Outer arm dynein light chain 1 | 1 | 1 |  |
| Adenine nucleotide alpha hydrolases-like | DHS-like NAD/FAD-binding domain | 1 | 1 |  |
| "Winged helix" DNA-binding domain | Protein kinase-like (PK-like) | 1 | 1 |  |
| DNA-glycosylase | DNA-glycosylase | 1 | 1 |  |
| USP8 N-terminal domain-like | JAB1/MPN domain | 1 | 1 |  |
| DNA primase core | P-loop containing nucleoside triphosphate hydrolases | 1 | 1 |  |
| DNA-glycosylase | Nudix | 1 | 1 |  |
| Trigger factor ribosome-binding domain | Triger factor/SurA peptide-binding domain-like | 1 | 1 |  |
| DNA ligase/mRNA capping enzyme, catalytic domain | DNA ligase/mRNA capping enzyme, catalytic domain | 1 | 1 |  |
| TPR-like | PUA domain-like | 1 | 1 |  |
| HAD-like | Protein kinase-like (PK-like) | 1 | 1 |  |
| PIN domain-like | Chromo domain-like | 1 | 1 |  |
| UBC-like | UBA-like | 1 | 1 |  |
| TGS-like | Class II aaRS ABD-related | 1 | 1 |  |
| 2Fe-2S ferredoxin-like | Glucocorticoid receptor-like (DNA-binding domain) | 1 | 1 |  |
| Pseudouridine synthase | Pseudouridine synthase | 1 | 1 |  |
| Glucocorticoid receptor-like (DNA-binding domain) | ADP-ribosylation | 1 | 1 |  |
| F-box domain | SET domain | 1 | 1 |  |
| Quinoprotein alcohol dehydrogenase-like | Soluble quinoprotein glucose dehydrogenase | 1 | 1 |  |
| Ubiquitin-like | Bromodomain | 1 | 1 |  |
| Chromo domain-like | Ankyrin repeat | 1 | 1 |  |
| ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase | ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase | 1 | 1 |  |
| Group V grass pollen allergen | Group V grass pollen allergen | 1 | 1 |  |
| Protein kinase-like (PK-like) | BEACH domain | 1 | 1 |  |
| Plant invertase/pectin methylesterase inhibitor | NAC domain | 1 | 1 |  |
| Nucleotide-binding domain | Nucleotide-binding domain | 1 | 1 |  |
| FYVE/PHD zinc finger | Ankyrin repeat | 1 | 1 |  |
| TPR-like | Metallo-dependent phosphatases | 1 | 1 |  |
| CarD-like | P-loop containing nucleoside triphosphate hydrolases | 1 | 1 |  |
| C2 domain (Calcium/lipid-binding domain, CaLB) | alpha/beta-Hydrolases | 1 | 1 |  |
| Starch-binding domain-like | Glutathione synthetase ATP-binding domain-like | 1 | 1 |  |
| Periplasmic binding protein-like II | Porphobilinogen deaminase (hydroxymethylbilane synthase), C-terminal domain | 1 | 1 |  |
| FAD/NAD(P)-binding domain | Heme-dependent catalase-like | 1 | 1 |  |
| Protein kinase-like (PK-like) | DPP6 N-terminal domain-like | 1 | 1 |  |
| Formiminotransferase domain of formiminotransferase-cyclodeaminase. | Formiminotransferase domain of formiminotransferase-cyclodeaminase. | 1 | 1 |  |
| Sec63 N-terminal domain-like | DNA/RNA polymerases | 1 | 1 |  |
| Bacterial photosystem II reaction centre, L and M subunits | Photosystem II antenna protein-like | 1 | 1 |  |
| Hypothetical protein PA1324 | Starch-binding domain-like | 1 | 1 |  |
| P-loop containing nucleoside triphosphate hydrolases | Retrovirus zinc finger-like domains | 1 | 1 |  |
| DnaJ/Hsp40 cysteine-rich domain | DnaJ/Hsp40 cysteine-rich domain | 1 | 1 |  |
| R3H domain | Ankyrin repeat | 1 | 1 |  |
| Hypothetical protein c14orf129, hspc210 | TPR-like | 1 | 1 |  |
| Phosphohistidine domain | Phosphoenolpyruvate/pyruvate domain | 1 | 1 |  |
| P-loop containing nucleoside triphosphate hydrolases | POZ domain | 1 | 1 |  |
| SIS domain | Phosphoenolpyruvate/pyruvate domain | 1 | 1 |  |
| FMN-linked oxidoreductases | Nucleotide-binding domain | 1 | 1 |  |
| Tropomyosin | RING/U-box | 1 | 1 |  |
| Starch-binding domain-like | (Trans)glycosidases | 1 | 1 |  |
| PLP-dependent transferases | Ornithine decarboxylase C-terminal domain | 1 | 1 |  |
| 2Fe-2S ferredoxin-like | Formate dehydrogenase/DMSO reductase, domains 1-3 | 1 | 1 |  |
| Bromodomain | Formin homology 2 domain (FH2 domain) | 1 | 1 |  |
| Radical SAM enzymes | Acyl-CoA N-acyltransferases (Nat) | 1 | 1 |  |
| PsbU/PolX domain-like | Nucleotidyltransferase | 1 | 1 |  |
| Cysteine proteinases | Nucleic acid-binding proteins | 1 | 1 |  |
| BRCA2 helical domain | Nucleic acid-binding proteins | 1 | 1 |  |
| Tudor/PWWP/MBT | P-loop containing nucleoside triphosphate hydrolases | 1 | 1 |  |
| Calcyclin-binding protein-like | HSP20-like chaperones | 1 | 1 |  |
| Formate/glycerate dehydrogenase catalytic domain-like | Glyceraldehyde-3-phosphate dehydrogenase-like, C-terminal domain | 1 | 1 |  |
| Ribonuclease H-like | RING/U-box | 1 | 1 |  |
| F-box domain | Protein kinase-like (PK-like) | 1 | 1 |  |
| Acid proteases | Acid proteases | 1 | 1 |  |
| FMN-dependent nitroreductase-like | FMN-dependent nitroreductase-like | 1 | 1 |  |
| PFL-like glycyl radical enzymes | HCP-like | 1 | 1 |  |
| Metallo-dependent hydrolases | Glutamine synthetase/guanido kinase | 1 | 1 |  |
| HCP-like | Homing endonucleases | 1 | 1 |  |
| NusB-like | S-adenosyl-L-methionine-dependent methyltransferases | 1 | 1 |  |
| Sec1/munc18-like (SM) proteins | Sec1/munc18-like (SM) proteins | 1 | 1 |  |
| Adenine nucleotide alpha hydrolases-like | Molybdenum cofactor biosynthesis proteins | 1 | 1 |  |
| Surp module (SWAP domain) | Ubiquitin-like | 1 | 1 |  |
| PRC-barrel domain | Nucleotide-diphospho-sugar transferases | 1 | 1 |  |
| Carbamoyl phosphate synthetase, large subunit connection domain | Methylglyoxal synthase-like | 1 | 1 |  |
| Ankyrin repeat | RCC1/BLIP-II | 1 | 1 |  |
| L domain-like | ARM repeat | 1 | 1 |  |
| PDZ domain-like | PDZ domain-like | 1 | 1 |  |
| Thiamin diphosphate-binding fold (THDP-binding) | alpha/beta-Hydrolases | 1 | 1 |  |
| 2Fe-2S ferredoxin-like | 4Fe-4S ferredoxins | 1 | 1 |  |
| beta-beta-alpha zinc fingers | S-adenosyl-L-methionine-dependent methyltransferases | 1 | 1 |  |
| (Phosphotyrosine protein) phosphatases II | Actin depolymerizing proteins | 1 | 1 |  |
| DHS-like NAD/FAD-binding domain | Enolase C-terminal domain-like | 1 | 1 |  |
| ARID-like | Clavaminate synthase-like | 1 | 1 |  |
| NAD(P)-binding Rossmann-fold domains | YgbK-like | 1 | 1 |  |
| Trigger factor ribosome-binding domain | FKBP-like | 1 | 1 |  |
| F-box domain | LysM domain | 1 | 1 |  |
| SufE/NifU | NadA-like | 1 | 1 |  |
| Quinoprotein alcohol dehydrogenase-like | Protein kinase-like (PK-like) | 1 | 1 |  |
| TGS-like | Class II aaRS and biotin synthetases | 1 | 1 |  |
| P-loop containing nucleoside triphosphate hydrolases | HIT-like | 1 | 1 |  |
| TGS-like | ThrRS/AlaRS common domain | 1 | 1 |  |
| Formyltransferase | FMT C-terminal domain-like | 1 | 1 |  |
| Tudor/PWWP/MBT | DNA repair protein MutS, domain I | 1 | 1 |  |
| Adenine nucleotide alpha hydrolases-like | GMP synthetase C-terminal dimerisation domain | 1 | 1 |  |
| P-loop containing nucleoside triphosphate hydrolases | Obg GTP-binding protein C-terminal domain | 1 | 1 |  |
| FAD-linked oxidases, C-terminal domain | FAD-linked oxidases, C-terminal domain | 1 | 1 |  |
| P-loop containing nucleoside triphosphate hydrolases | TRCF domain-like | 1 | 1 |  |
| Glucocorticoid receptor-like (DNA-binding domain) | BRCT domain | 1 | 1 |  |
| Nucleic acid-binding proteins | Elongation factor Ts (EF-Ts), dimerisation domain | 1 | 1 |  |
| TPR-like | NAD kinase/diacylglycerol kinase-like | 1 | 1 |  |
| Tudor/PWWP/MBT | Tudor/PWWP/MBT | 1 | 1 |  |
| Protein kinase-like (PK-like) | Acyl-CoA dehydrogenase NM domain-like | 1 | 1 |  |
| FAD-linked reductases, C-terminal domain | Conserved domain common to transcription factors TFIIS, elongin A, CRSP70 | 1 | 1 |  |
| Histone-fold | RNI-like | 1 | 1 |  |
| Flavoproteins | Radical SAM enzymes | 1 | 1 |  |
| P-loop containing nucleoside triphosphate hydrolases | GIY-YIG endonuclease | 1 | 1 |  |
| Acetyl-CoA synthetase-like | Quinoprotein alcohol dehydrogenase-like | 1 | 1 |  |
| FAD/NAD(P)-binding domain | Nucleotide-binding domain | 1 | 1 |  |
| XRCC4, N-terminal domain | XRCC4, C-terminal oligomerization domain | 1 | 1 |  |
| Lipocalins | Lipocalins | 1 | 1 |  |
| Putative isomerase YbhE | ARM repeat | 1 | 1 |  |
| Calcium-dependent phosphotriesterase | WD40 repeat-like | 1 | 1 |  |
| R3H domain | P-loop containing nucleoside triphosphate hydrolases | 1 | 1 |  |
| Rudiment single hybrid motif | N5-CAIR mutase (phosphoribosylaminoimidazole carboxylase, PurE) | 1 | 1 |  |
| HAD-like | HAD-like | 1 | 1 |  |
| Ubiquitin-like | Acid proteases | 1 | 1 |  |
| Concanavalin A-like lectins/glucanases | Cysteine proteinases | 1 | 1 |  |
| L domain-like | PA domain | 1 | 1 |  |
| FKBP-like | Triger factor/SurA peptide-binding domain-like | 1 | 1 |  |
| Starch-binding domain-like | Nucleic acid-binding proteins | 1 | 1 |  |
| Cysteine proteinases | UBA-like | 1 | 1 |  |
| Glucocorticoid receptor-like (DNA-binding domain) | HAD-like | 1 | 1 |  |
| Phosphoglycerate kinase | S-adenosyl-L-methionine-dependent methyltransferases | 1 | 1 |  |
| Composite domain of metallo-dependent hydrolases | Composite domain of metallo-dependent hydrolases | 1 | 1 |  |
| L-aspartase-like | Class II aaRS and biotin synthetases | 1 | 1 |  |
| SPOC domain-like | SAP domain | 1 | 1 |  |
| Acyl-CoA binding protein | Kelch motif | 1 | 1 |  |
| DNA polymerase beta, N-terminal domain-like | PsbU/PolX domain-like | 1 | 1 |  |
| Polynucleotide phosphorylase/guanosine pentaphosphate synthase (PNPase/GPSI), domain 3 | Eukaryotic type KH-domain (KH-domain type I) | 1 | 1 |  |
| PheT/TilS domain | Class II aaRS and biotin synthetases | 1 | 1 |  |
| Acyl-CoA binding protein | PF0523-like | 1 | 1 |  |
| Macro domain-like | HIT-like | 1 | 1 |  |
| PreATP-grasp domain | N5-CAIR mutase (phosphoribosylaminoimidazole carboxylase, PurE) | 1 | 1 |  |
| Plant invertase/pectin methylesterase inhibitor | Ribonuclease H-like | 1 | 1 |  |
| Endosomal sorting complex assembly domain | VPS28 C-terminal domain-like | 1 | 1 |  |
| FAD/NAD(P)-binding domain | Conserved domain common to transcription factors TFIIS, elongin A, CRSP70 | 1 | 1 |  |
| Methionyl-tRNA synthetase (MetRS), Zn-domain | Nucleic acid-binding proteins | 1 | 1 |  |
| Ankyrin repeat | RNA-binding domain, RBD | 1 | 1 |  |
| Actin-like ATPase domain | AF1104-like | 1 | 1 |  |
| HMA, heavy metal-associated domain | Metal cation-transporting ATPase, ATP-binding domain N | 1 | 1 |  |
| Ribosomal protein S5 domain 2-like | Polynucleotide phosphorylase/guanosine pentaphosphate synthase (PNPase/GPSI), domain 3 | 1 | 1 |  |
| ACP-like | Quinoprotein alcohol dehydrogenase-like | 1 | 1 |  |
| P-loop containing nucleoside triphosphate hydrolases | TPR-like | 1 | 1 |  |
| Retrovirus zinc finger-like domains | Chromo domain-like | 1 | 1 |  |
| Protein kinase-like (PK-like) | Class II aaRS ABD-related | 1 | 1 |  |
| F-box domain | Cullin repeat-like | 1 | 1 |  |
| Starch-binding domain-like | Cna protein B-type domain | 1 | 1 |  |
| Chorismate mutase II | Chorismate mutase II | 1 | 1 |  |
| Mannose-binding lectins | alpha/beta-Hydrolases | 1 | 1 |  |
| ARM repeat | "Winged helix" DNA-binding domain | 1 | 1 |  |
| Thiamin diphosphate-binding fold (THDP-binding) | Enolase N-terminal domain-like | 1 | 1 |  |
| Galactose mutarotase-like | Galactose mutarotase-like | 1 | 1 |  |
| RNA-binding domain, RBD | SPOC domain-like | 1 | 1 |  |
| PDZ domain-like | Rubredoxin-like | 1 | 1 |  |
| Eukaryotic type KH-domain (KH-domain type I) | RNA-binding domain, RBD | 1 | 1 |  |
| Ankyrin repeat | CCCH zinc finger | 1 | 1 |  |
| Nucleic acid-binding proteins | S15/NS1 RNA-binding domain | 1 | 1 |  |
| PHL pollen allergen | PHL pollen allergen | 1 | 1 |  |
| vWA-like | Cysteine-rich domain | 1 | 1 |  |
| Ribonuclease PH domain 2-like | Polynucleotide phosphorylase/guanosine pentaphosphate synthase (PNPase/GPSI), domain 3 | 1 | 1 |  |
| Acyl-CoA binding protein | Ankyrin repeat | 1 | 1 |  |
| Translational machinery components | Insert subdomain of RNA polymerase alpha subunit | 1 | 1 |  |
| POZ domain | DPP6 N-terminal domain-like | 1 | 1 |  |
| FAD/NAD(P)-binding domain | Thioredoxin-like | 1 | 1 |  |
| RNI-like | (Phosphotyrosine protein) phosphatases II | 1 | 1 |  |
| Activator of Hsp90 ATPase, Aha1 | Bet v1-like | 1 | 1 |  |
| P-loop containing nucleoside triphosphate hydrolases | Bromodomain | 1 | 1 |  |
| Nucleotidyltransferase | EF-hand | 1 | 1 |  |
| alpha/beta-Hydrolases | Glycerol-3-phosphate (1)-acyltransferase | 1 | 1 |  |
| Cytidine deaminase-like | YbiA-like | 1 | 1 |  |
| GYF domain | RNA-binding domain, RBD | 1 | 1 |  |
| CheY-like | CheY-like | 1 | 1 |  |
| FabD/lysophospholipase-like | Probable ACP-binding domain of malonyl-CoA ACP transacylase | 1 | 1 |  |
| DNA repair protein MutS, domain III | SMR domain-like | 1 | 1 |  |
| FYVE/PHD zinc finger | Clavaminate synthase-like | 1 | 1 |  |
| Dcp2 domain-like | Nudix | 1 | 1 |  |
| SBT domain | SBT domain | 1 | 1 |  |
| Ribosomal protein S5 domain 2-like | DNA mismatch repair protein MutL | 1 | 1 |  |
| ARID-like | HMG-box | 1 | 1 |  |
| Putative DNA-binding domain | PheT/TilS domain | 1 | 1 |  |
| F-box domain | Cullin homology domain | 1 | 1 |  |
| Tricorn protease domain 2 | DPP6 N-terminal domain-like | 1 | 1 |  |
| Class I glutamine amidotransferase-like | Ribulose-phoshate binding barrel | 1 | 1 |  |
| Glucocorticoid receptor-like (DNA-binding domain) | Domain of poly(ADP-ribose) polymerase | 1 | 1 |  |
| L domain-like | Subtilisin-like | 1 | 1 |  |
| YVTN repeat-like/Quinoprotein amine dehydrogenase | WD40 repeat-like | 1 | 1 |  |
| CCCH zinc finger | WD40 repeat-like | 1 | 1 |  |
| PH domain-like | (Phosphotyrosine protein) phosphatases II | 1 | 1 |  |
| Glycerol-3-phosphate (1)-acyltransferase | EF-hand | 1 | 1 |  |
| 6-phosphogluconate dehydrogenase C-terminal domain-like | YgbK-like | 1 | 1 |  |
| Protein kinase-like (PK-like) | Class II aaRS and biotin synthetases | 1 | 1 |  |
| P-loop containing nucleoside triphosphate hydrolases | SMR domain-like | 1 | 1 |  |
| P-loop containing nucleoside triphosphate hydrolases | Glucocorticoid receptor-like (DNA-binding domain) | 1 | 1 |  |
| Ankyrin repeat | Kelch motif | 1 | 1 |  |
| POZ domain | Galactose-binding domain-like | 1 | 1 |  |
| Adenine nucleotide alpha hydrolases-like | YjgF-like | 1 | 1 |  |
| Pre-PUA domain | PUA domain-like | 1 | 1 |  |
| FAD/NAD(P)-binding domain | Acetyl-CoA synthetase-like | 1 | 1 |  |
| L domain-like | FabD/lysophospholipase-like | 1 | 1 |  |
| Galactose-binding domain-like | Glycosyl hydrolase domain | 1 | 1 |  |
| DHS-like NAD/FAD-binding domain | alpha/beta-Hydrolases | 1 | 1 |  |
| BRCT domain | Nucleotidyltransferase | 1 | 1 |  |
| F-box domain | P-loop containing nucleoside triphosphate hydrolases | 1 | 1 |  |
| Nucleic acid-binding proteins | BRCT domain | 1 | 1 |  |
| F-box domain | RING/U-box | 1 | 1 |  |
| Tricorn protease N-terminal domain | Tricorn protease N-terminal domain | 1 | 1 |  |
| DUSP-like | DUSP-like | 1 | 1 |  |
| DNA/RNA polymerases | RNI-like | 1 | 1 |  |
| Chaperone J-domain | Homeodomain-like | 1 | 1 |  |
| Homeodomain-like | Conserved domain common to transcription factors TFIIS, elongin A, CRSP70 | 1 | 1 |  |
| Cysteine proteinases | Galactose-binding domain-like | 1 | 1 |  |
| DAK1/DegV-like | DhaL-like | 1 | 1 |  |
| Zn-binding ribosomal proteins | Zn-binding ribosomal proteins | 1 | 1 |  |
| Voltage-gated potassium channels | NAD(P)-binding Rossmann-fold domains | 1 | 1 |  |
| Cullin repeat-like | Bet v1-like | 1 | 1 |  |
| PH domain-like | "Winged helix" DNA-binding domain | 1 | 1 |  |
| Chaperone J-domain | HSC20 (HSCB), C-terminal oligomerisation domain | 1 | 1 |  |
| Galactose oxidase, central domain | Kelch motif | 1 | 1 |  |
| Quinoprotein alcohol dehydrogenase-like | Quinoprotein alcohol dehydrogenase-like | 1 | 1 |  |
| Glutathione synthetase ATP-binding domain-like | Carbamoyl phosphate synthetase, large subunit connection domain | 1 | 1 |  |
| CarD-like | TRCF domain-like | 1 | 1 |  |
| Aldolase | 2-isopropylmalate synthase LeuA, allosteric (dimerisation) domain | 1 | 1 |  |
| HisI-like | all-alpha NTP pyrophosphatases | 1 | 1 |  |
| CBS-domain pair | FAD-binding/transporter-associated domain-like | 1 | 1 |  |
| alpha/beta knot | Nucleic acid-binding proteins | 1 | 1 |  |
| PLP-dependent transferases | PLP-dependent transferases | 1 | 1 |  |
| Cytidine deaminase-like | Cytidine deaminase-like | 1 | 1 |  |
| Barwin-like endoglucanases | Barwin-like endoglucanases | 1 | 1 |  |
| Ubiquitin-like | HAD-like | 1 | 1 |  |
| "Winged helix" DNA-binding domain | HRDC-like | 1 | 1 |  |
| Carbon-nitrogen hydrolase | Adenine nucleotide alpha hydrolases-like | 1 | 1 |  |
| Cysteine proteinases | DNA-binding domain | 1 | 1 |  |
| F-box domain | DNA-binding domain | 1 | 1 |  |
| BRCA2 helical domain | BRCA2 tower domain | 1 | 1 |  |
| Protein kinase-like (PK-like) | Acyl-CoA dehydrogenase C-terminal domain-like | 1 | 1 |  |
| EF-hand | TPR-like | 1 | 1 |  |
| Rhomboid-like | Rhomboid-like | 1 | 1 |  |
| Thioredoxin-like | VC0467-like | 1 | 1 |  |
| At5g01610-like | F-box domain | 1 | 1 |  |
| Adenine nucleotide alpha hydrolases-like | Thioredoxin-like | 1 | 1 |  |
| beta-beta-alpha zinc fingers | CCCH zinc finger | 1 | 1 |  |
| Formin homology 2 domain (FH2 domain) | EF-hand | 1 | 1 |  |
| SAM/Pointed domain | Metallo-hydrolase/oxidoreductase | 1 | 1 |  |
| Dihydrofolate reductase-like | YbiA-like | 1 | 1 |  |
| Acyl-CoA N-acyltransferases (Nat) | Bromodomain | 1 | 1 |  |
| P-loop containing nucleoside triphosphate hydrolases | CCCH zinc finger | 1 | 1 |  |
| Ribokinase-like | Thiamin phosphate synthase | 1 | 1 |  |
| FAD/NAD(P)-binding domain | ACP-like | 1 | 1 |  |
| Cyclophilin-like | Retrovirus zinc finger-like domains | 1 | 1 |  |
| FKBP12-rapamycin-binding domain of FKBP-rapamycin-associated protein (FRAP) | Protein kinase-like (PK-like) | 1 | 1 |  |
| ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase | DNA mismatch repair protein MutL | 1 | 1 |  |
| F-box domain | Pectin lyase-like | 1 | 1 |  |
| FAD/NAD(P)-binding domain | SMAD/FHA domain | 1 | 1 |  |
| Folate-binding domain | Aminomethyltransferase beta-barrel domain | 1 | 1 |  |
| FYVE/PHD zinc finger | PUA domain-like | 1 | 1 |  |
| cAMP-binding domain-like | cAMP-binding domain-like | 1 | 1 |  |
| S-adenosyl-L-methionine-dependent methyltransferases | RNA-binding domain, RBD | 1 | 1 |  |
| vWA-like | SAP domain | 1 | 1 |  |
| TPR-like | RNI-like | 1 | 1 |  |
| 5' to 3' exonuclease, C-terminal subdomain | Chromo domain-like | 1 | 1 |  |
| NAD(P)-binding Rossmann-fold domains | Citrate synthase | 1 | 1 |  |
| FAD/NAD(P)-binding domain | HI0933 insert domain-like | 1 | 1 |  |
| DNA repair protein MutS, domain I | GIY-YIG endonuclease | 1 | 1 |  |
| Tudor/PWWP/MBT | DNA repair protein MutS, domain II | 1 | 1 |  |
| SET domain | HIT/MYND zinc finger-like | 1 | 1 |  |
| BRCT domain | DNA polymerase beta, N-terminal domain-like | 1 | 1 |  |
| F-box domain | Soluble quinoprotein glucose dehydrogenase | 1 | 1 |  |
| Heme oxygenase-like | HAD-like | 1 | 1 |  |
| vWA-like | C-terminal domain of Ku80 | 1 | 1 |  |
| "Winged helix" DNA-binding domain | Zinc beta-ribbon | 1 | 1 |  |
| Class I glutamine amidotransferase-like | ADC synthase | 1 | 1 |  |
| PYP-like sensor domain (PAS domain) | CheY-like | 1 | 1 |  |
| P-loop containing nucleoside triphosphate hydrolases | PLP-dependent transferases | 1 | 1 |  |
| Acyl-CoA N-acyltransferases (Nat) | BRCT domain | 1 | 1 |  |
| Acid proteases | UBA-like | 1 | 1 |  |
| BRCT domain | P-loop containing nucleoside triphosphate hydrolases | 1 | 1 |  |
| SAP domain | WGR domain-like | 1 | 1 |  |
| Nqo1 FMN-binding domain-like | Nqo1 middle domain-like | 1 | 1 |  |
| Ankyrin repeat | S-adenosyl-L-methionine-dependent methyltransferases | 1 | 1 |  |
| C-type lectin-like | Protein kinase-like (PK-like) | 1 | 1 |  |
| Acyl-CoA N-acyltransferases (Nat) | Acyl-CoA N-acyltransferases (Nat) | 1 | 1 |  |
| Concanavalin A-like lectins/glucanases | Calpain large subunit, middle domain (domain III) | 1 | 1 |  |
| SMAD/FHA domain | Phospholipase D/nuclease | 1 | 1 |  |
| SSo0622-like | S-adenosyl-L-methionine-dependent methyltransferases | 1 | 1 |  |
| Glutathione synthetase ATP-binding domain-like | Phosphoenolpyruvate/pyruvate domain | 1 | 1 |  |
| Trimeric LpxA-like enzymes | Heme-dependent catalase-like | 1 | 1 |  |
| Glutathione synthetase ATP-binding domain-like | Methylglyoxal synthase-like | 1 | 1 |  |
| Ubiquitin-like | F-box domain | 1 | 1 |  |
| PUA domain-like | alpha/beta knot | 1 | 1 |  |
| PH domain-like | Prismane protein-like | 1 | 1 |  |
| PGBD-like | DnaJ/Hsp40 cysteine-rich domain | 1 | 1 |  |
| (Phosphotyrosine protein) phosphatases II | (Phosphotyrosine protein) phosphatases II | 1 | 1 |  |
| PIN domain-like | Nucleic acid-binding proteins | 1 | 1 |  |
| F-box domain | Peptidase/esterase 'gauge' domain | 1 | 1 |  |
| Protein kinase-like (PK-like) | PH domain-like | 1 | 1 |  |
| Glutathione synthetase ATP-binding domain-like | Phosphohistidine domain | 1 | 1 |  |
| ARM repeat | BEACH domain | 1 | 1 |  |
| Chromo domain-like | Homeodomain-like | 1 | 1 |  |
| FtsH protease domain-like | FtsH protease domain-like | 1 | 1 |  |
| HD-domain/PDEase-like | EF-hand | 1 | 1 |  |
| Retrovirus zinc finger-like domains | Acid proteases | 1 | 1 |  |