SUPERFAMILY 2 can be accessed from supfam.org. Please contact us if you experience any problems.
|
|
ENV polyprotein, receptor-binding domain superfamily
SCOP classification
Superfamily statistics
Functional annotation
| General category | Other |
| Detailed category | Viral proteins |
Document: Function annotation of SCOP domain superfamilies
InterPro annotation
| Cross references | IPR008981 SSF49830 Protein matches |
| Abstract | The F-MuLV receptor-binding domain forms part of the retroviral envelope glycoprotein in the murine leukaemia virus. Envelope glycoproteins are synthesized as single chain precursors, which are subsequently cleaved into the surface subunit (SU) and the transmembrane subunit TM. The N-terminal half of SU forms the receptor-binding domain (RBD), which is responsible for binding to the cell surface receptor, the cationic amino acid transporter mCAT-1. The RBD is structurally partitioned into a conserved beta sandwich framework of Greek key topology and a variable helical loop subdomain [ 9287219]. The RBD contains three variable regions, VRA, VRB and VRC, which vary in sequence and length between MuLVs that use different receptors. VRA and VRB are closely associated with one another in the helical subdomain. There is a putative receptor-binding pocket in VRA, which may play a role in helping to determine receptor specificity [12634359].
|
InterPro database
PDBeMotif information about ligands, sequence and structure motifs
PDBeMotif resource
Jump to [ Top of page · SCOP classification · InterPro annotation · PDBeMotif links · Functional annotation ]
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 2 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 ENV polyprotein, receptor-binding domain 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 2 hidden Markov models representing the ENV polyprotein, receptor-binding domain 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 · InterPro annotation · PDBeMotif links · Functional annotation · Internal database links ]
|
|
0
