Baseplate structural protein Gp9/Gp10 (IPR008987)

Short name: Baseplate_struct_prot_Gp9/10

Family relationships



The Bacteriophage T4 is a double-stranded, structurally complex virus that infects Escherichia coli. Gene product 9 (Gp9) connects the long tail fibres to the baseplate, and triggers baseplate reorganisation and tail contraction after virus attachment to the host cell. The Gp9 protein forms a homotrimer, with each monomer having three domains: the N-terminal alpha-helical domain forms a triple coiled coil, the middle domain is a mixed, seven-stranded beta sandwich with a unique fold, and the C-terminal domain is a eight-stranded beta-sandwich with similarity to jellyroll viral capsid protein structures [PMID: 10545330]. The flexible loops that occur between domains may enable the conformational changes necessary during infection.

GO terms

Biological Process

GO:0019058 viral life cycle

Molecular Function

No terms assigned in this category.

Cellular Component

No terms assigned in this category.

Contributing signatures

Signatures from InterPro member databases are used to construct an entry.