HAMAP rule MF_04120

Accession	MF_04120
Dates	18-JAN-2018 (Created) 23-AUG-2022 (Last updated, Version 4)

Name	PORTAL_PROTEIN_T7

Scope

Viruses; Caudoviricetes

Template

P03728 (PORTL_BPT7)

Triggered by

HAMAP; MF_04120 (Get profile general information and statistics)

Identifier

PORTL

Protein name

RecName: Full=Portal protein; AltName: Full=Head-to-tail connector;

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.
Subunit	Homododecamer. Interacts with major capsid protein. Interacts with the tail tube protein gp11. Interacts with the terminase large subunit. Interacts with the internal virion protein gp14.
Subcellular location	Virion.
Similarity	Belongs to the podoviridae portal protein family.

Capsid protein
Viral capsid assembly
Viral genome ejection through host cell envelope
Viral genome packaging
Viral penetration into host cytoplasm
Viral release from host cell
Viral short tail ejection system
Virion
Virus entry into host cell

GO:0019028; Cellular component: viral capsid.
GO:0099002; Biological process: viral genome ejection through host cell envelope, short tail mechanism.
GO:0046798; Cellular component: viral portal complex.
GO:0019073; Biological process: viral DNA genome packaging.

Pfam	PF12236; Head-tail_con; 1;

Size range	500-600 amino acids
Related rules	None
Fusion	None

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