The name of this superfamily has been modified since the most recent official CATH+ release (v4_3_0). At the point of the last release, this superfamily was named:

"
Spike glycoprotein, N-terminal domain
".

Functional Families

Overview of the Structural Clusters (SC) and Functional Families within this CATH Superfamily. Clusters with a representative structure are represented by a filled circle.

Superfamily: Spike glycoprotein, N-terminal domain

This superfamily represents the N-terminal domain of the coronavirus spike glycoprotein, which mainly functions as a receptor binding domain. PMID:21670291.

The spike protein on coronavirus envelopes recognises receptors through the activities of a receptor-binding subunit S1 before it fuses viral and host membranes through the activities of a membrane-fusion subunit S2. S1 contains two independent domains, an N-terminal domain (NTD) and a C domain, both of which can function as viral receptor-binding domains PMID:23091051. The NTD is a 13-stranded beta-sandwich with two antiparallel beta-sheets stacked against each other through hydrophobic interactions and has an overall galectin fold.

INTERPRO:IPR032500, PFAM:PF16451,DOI:10.1073/pnas.1104306108,DOI:10.1074/jbc.M112.418210

GO Diversity

Unique GO annotations
10 Unique GO terms

EC Diversity

Unique EC annotations
0 Unique EC terms

Species Diversity

Unique species annotations
114 Unique species

Sequence/Structure Diversity

Overview of the sequence / structure diversity of this superfamily compared to other superfamilies in CATH. Click on the chart to view the data in more detail.

Superfamily Summary

A general summary of information for this superfamily.
Structures
Domains: 5
Domain clusters (>95% seq id): 3
Domain clusters (>35% seq id): 1
Unique PDBs: 3
Alignments
Structural Clusters (5A): 1
Structural Clusters (9A): 1
FunFam Clusters: 2
Function
Unique EC:
Unique GO: 10
Taxonomy
Unique Species: 114