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HAMAP rule MF_04114

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General rule information [?]

Accession MF_04114
Dates 11-OCT-2017 (Created)
23-AUG-2022 (Last updated, Version 4)
Viruses; Caudoviricetes
Template P13334 (PORTL_BPT4)

Propagated annotation [?]

Identifier, protein and gene names [?]

Protein name
RecName: Full=Portal protein;
AltName: Full=gp20;

Comments [?]

Function Forms the portal vertex of the capsid. This portal plays critical roles in head assembly, genome packaging, neck/tail attachment, and genome ejection. The portal protein multimerizes as a single ring-shaped homododecamer arranged around a central channel. Binds to the terminase subunits to form the packaging machine.
Subunit Homododecamer. Interacts with the large terminase subunit. Interacts with the major capsid protein. Interacts with the capsid vertex protein.
Subcellular location Virion. Note=Located at a unique 5-fold vertex of the icosahedral capsid.
Similarity Belongs to the Tevenvirinae portal protein family.

Keywords [?]

Gene Ontology [?]

GO:0019028; Cellular component: viral capsid.
GO:0099000; Biological process: viral genome ejection through host cell envelope, contractile tail mechanism.
GO:0019076; Biological process: viral release from host cell.
GO:0019072; Biological process: viral genome packaging.

Cross-references [?]

Pfam PF07230; Peptidase_S80; 1;

Additional information [?]

Size range 414-631 amino acids
Related rules None
Fusion None