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  Home > SCOP hierarchy > Glutamine synthetase/guanido kinase superfamily


Glutamine synthetase/guanido kinase superfamily

SCOP classification
Root:   SCOP hierarchy in SUPERFAMILY [ 0] (11)
Class:   Alpha and beta proteins (a+b) [ 53931] (376)
Fold:   Glutamine synthetase/guanido kinase [ 55930]
Superfamily:   Glutamine synthetase/guanido kinase [ 55931] (5)
Families:   Glutamine synthetase catalytic domain [ 55932]
  Guanido kinase catalytic domain [ 55935] (2)
  Glutamate-cysteine ligase family 2 (GCS2) [ 111160]
  Glutamate-cysteine ligase [ 118090]
  GatB/GatE catalytic domain-like [ 143812] (2)

Superfamily statistics
Genomes (3,225) Uniprot 2018_03 genome PDB chains (SCOP 1.75)
Domains 14,311 119,458 24
Proteins 14,212 119,085 24

 Functional annotation
General category Metabolism
Detailed category Amino acids metabolism and transport

Document: Function annotation of SCOP domain superfamilies

Enzyme Commission (EC)

(show details)
EC termFDR (all)SDEO levelAnnotation (direct or inherited)
Enzyme Commission (EC)Ligases0Least InformativeDirect
Enzyme Commission (EC)Lyases1Least InformativeInherited
Enzyme Commission (EC)Forming carbon-nitrogen bonds0Moderately InformativeDirect
Enzyme Commission (EC)Carboxy-lyases0.0952Moderately InformativeInherited
Enzyme Commission (EC)Phosphotransferases with a nitrogenous group as ac0InformativeDirect
Enzyme Commission (EC)Acid--D-amino-acid ligases (peptide synthases)0.03504InformativeInherited
Enzyme Commission (EC)Acid--ammonia (or amide) ligases (amide synthases)0Highly InformativeDirect
Enzyme Commission (EC)Glutamate decarboxylase0Highly InformativeDirect
Enzyme Commission (EC)Glutathione synthase0.0000003637Highly InformativeDirect

Document: EC annotation of SCOP domains

Mouse Phenotype (MP)

(show details)
MP termFDR (all)SDMP levelAnnotation (direct or inherited)
Mammalian Phenotype (MP)growth/size/body region phenotype0Least InformativeDirect
Mammalian Phenotype (MP)abnormal postnatal growth/weight/body size0Moderately InformativeDirect

Document: MP annotation of SCOP domains

Worm Phenotype (WP)

(show details) Document: WP annotation of SCOP domains

Yeast Phenotype (YP)

(show details)
YP termFDR (all)SDYP levelAnnotation (direct or inherited)
Yeast Phenotype (YP)resistance to chemicals0Least InformativeDirect

Document: YP annotation of SCOP domains

Fly Phenotype (FP)

(show details) Document: FP annotation of SCOP domains

Fly Anatomy (FA)

(show details) Document: FA annotation of SCOP domains

Xenopus Anatomy (XA)

(show details)
XA termFDR (all)SDXA levelAnnotation (direct or inherited)
Xenopus ANatomical entity (XAN)urogenital system0Least InformativeDirect
Xenopus ANatomical entity (XAN)nervous system0Least InformativeDirect
Xenopus ANatomical entity (XAN)head0Least InformativeDirect
Xenopus ANatomical entity (XAN)trunk0Least InformativeDirect
Xenopus ANatomical entity (XAN)cavitated compound organ0Least InformativeDirect
Xenopus ANatomical entity (XAN)brain0Moderately InformativeDirect
Xenopus ANatomical entity (XAN)alimentary system0Moderately InformativeDirect
Xenopus ANatomical entity (XAN)testis0Moderately InformativeDirect
Xenopus ANatomical entity (XAN)viscus0Moderately InformativeDirect
Xenopus ANatomical entity (XAN)sensory system0.001676Moderately InformativeInherited
Xenopus ANatomical entity (XAN)eye0.0009686InformativeDirect

Document: XA annotation of SCOP domains

Arabidopsis Plant Ontology (AP)

(show details)
AP termFDR (all)SDAP levelAnnotation (direct or inherited)
Plant ANatomical entity (PAN)whole plant0Least InformativeDirect
Plant ANatomical entity (PAN)seed0Least InformativeDirect
Plant ANatomical entity (PAN)megasporophyll0Least InformativeDirect
Plant ANatomical entity (PAN)microsporophyll0Least InformativeDirect
Plant ANatomical entity (PAN)flower0Least InformativeDirect
Plant ANatomical entity (PAN)collective phyllome structure0Least InformativeDirect
Plant ANatomical entity (PAN)shoot axis0Least InformativeDirect
Plant ANatomical entity (PAN)leaf0Least InformativeDirect
Plant structure DEvelopment stage (PDE)E expanded cotyledon stage0Least InformativeDirect

Document: AP annotation of SCOP domains

Enzyme Commission (EC)

(show details)
EC termFDR (all)SDEC levelAnnotation (direct or inherited)
Enzyme Commission (EC)Transferring phosphorus-containing groups0.00006841Least InformativeDirect
Enzyme Commission (EC)Ligases0Moderately InformativeDirect
Enzyme Commission (EC)Transferring groups other than amino-acyl groups1Moderately InformativeInherited
Enzyme Commission (EC)Acid--amino-acid ligases (peptide synthases)0InformativeDirect
Enzyme Commission (EC)Phosphotransferases with a nitrogenous group as acceptor0Highly InformativeDirect
Enzyme Commission (EC)Acid--ammonia (or amine) ligases (amide synthases)0Highly InformativeDirect

Document: EC annotation of SCOP domains

Jump to [ Top of page · SCOP classification · Functional annotation · Enzyme Commission (EC) · Mouse Phenotype (MP) · Worm Phenotype (WP) · Yeast Phenotype (YP) · Fly Phenotype (FP) · Fly Anatomy (FA) · Xenopus Anatomy (XA) · Arabidopsis Plant Ontology (AP) · Enzyme Commission (EC) ]

Internal database links

Browse genome assignments for this superfamily. The SUPERFAMILY hidden Markov model library has been used to carry out SCOP domain assignments to all genomes at the superfamily level.

Alignments of sequences to 25 models in this superfamily are available by clicking on the 'Alignments' icon above. PDB sequences less than 40% identical are shown by default, but any other sequence(s) may be aligned. Select PDB sequences, genome sequences, or paste in or upload your own sequences.


Browse and view proteins in genomes which have different domain combinations including a Glutamine synthetase/guanido kinase domain.

Examine the distribution of domain superfamilies, or families, across the major taxonomic kingdoms or genomes within a kingdom. This gives an immediate impression of how superfamilies, or families, are restricted to certain kingdoms of life.


Explore domain occurrence network where nodes represent genomes and edges are domain architectures (shared between genomes) containing the superfamily of interest.

There are 25 hidden Markov models representing the Glutamine synthetase/guanido kinase superfamily. Information on how the models are built, and plots showing hydrophobicity, match emmission probabilities and insertion/deletion probabilities can be inspected.


Jump to [ Top of page · SCOP classification · Functional annotation · Enzyme Commission (EC) · Mouse Phenotype (MP) · Worm Phenotype (WP) · Yeast Phenotype (YP) · Fly Phenotype (FP) · Fly Anatomy (FA) · Xenopus Anatomy (XA) · Arabidopsis Plant Ontology (AP) · Enzyme Commission (EC) · Internal database links ]
Please cite: Gough, J., Karplus, K., Hughey, R. and Chothia, C. (2001). "Assignment of Homology to Genome Sequences using a Library of Hidden Markov Models that Represent all Proteins of Known Structure." J. Mol. Biol., 313(4), 903-919.

Please send feedback, comments or questions to superfamily@cs.bris.ac.uk or use the feedback form.

© Copyright 2013 The SUPERFAMILY authors and Julian Gough.