id: Pfam:PF11041
pfam_id: PF11041
name: Bacteriophage baseplate wedge 1 protein
short_name: Phage_Wedge1
seed_status: EX_DUF
characterization_status: UNSCORED
curation_status: SEEDED
source_url: https://www.ebi.ac.uk/interpro/api/entry/pfam/PF11041
counters:
  proteins: 835
  matches: 886
  proteomes: 694
  taxa: 1468
  structures: 10
  alphafold_models: 373
  domain_architectures: 10
provenance:
  snapshot_id: interpro-pfam-duf-2026-10-10
  path: data/worklists/interpro-pfam-duf-2026-10-10.json
  sha256: 17fb625876c9326ed284263a47bcd84e0d7844a31c040dc06cd2260c36f1c383
  generated_at: '2026-10-10T07:44:21.614711Z'
  source_url: https://www.ebi.ac.uk/interpro/api/entry/pfam/
interpro_id: InterPro:IPR021283
description: This entry includes the baseplate wedge 1 protein of bacteriophage PhiTE that infects the
  plant pathogen Pectobacterium atrosepticum. Wedge 1 is a component of the wedge complex that comprises
  six lobed protomeric units in the baseplate. Each protomer contains a single copy of wedge 1 protein,
  two copies of wedge 2 protein in alternate conformations, and a singular IG-like protein referred to
  as the spacer. Wedge 1 forms the bulk of the wedge structure along with wedge 2, constituting the canonical
  trifurcation unit that acts as a coordination platform adhering wedge 1 and 2 proteins into a continuous
  ring. The short tail fiber (STF) attaches to wedge 1 monomers through its N-terminal loops that form
  a globular joint, making electrostatic and hydrophobic interactions. Wedge 1 also forms a putative disulfide
  bond with the sheath initiator (SI) protein (Wedge1:C143, SI:C143) that may serve as a pivoting point
  to transduce signals associated with receptor binding.