id: Pfam:PF17555
pfam_id: PF17555
name: Type VI secretion system, TssN
short_name: TssN
seed_status: EX_DUF
characterization_status: UNSCORED
curation_status: SEEDED
source_url: https://www.ebi.ac.uk/interpro/api/entry/pfam/PF17555
counters:
  proteins: 536
  matches: 536
  proteomes: 484
  taxa: 654
  structures: 0
  alphafold_models: 345
  domain_architectures: 1
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:IPR035177
description: T6SSs are toxin delivery systems. It is a multiprotein complex requiring numerous core proteins
  (Tss proteins) including cytoplasmic, transmembrane, and outer membrane components. The needle or tube
  apparatus is comprised of a phage-like complex, similar to the T4 contractile bacteriophage tail, which
  is thought to be anchored to the membrane by a trans-envelope complex [[cite:PUB00090998]]. TssN proteins
  have multiple predicted transmembrane (TM) regions. In Flavobacterium johnsoniae, three specific components
  (TssN, TssO and TssP) are absent in the other sub-types of T6SS [[cite:PUB00090999]].