id: Pfam:PF09442
pfam_id: PF09442
name: Domain of unknown function (DUF2018)
short_name: DUF2018
seed_status: UNKNOWN_CANDIDATE
characterization_status: UNSCORED
curation_status: SEEDED
source_url: https://www.ebi.ac.uk/interpro/api/entry/pfam/PF09442
counters:
  proteins: 172
  matches: 172
  proteomes: 172
  taxa: 271
  structures: 5
  alphafold_models: 132
  domain_architectures: 2
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:IPR018563
description: Acid-adaptive protein possibly of physiological significance when H.pylori colonises the
  human stomach, which adopts a unique four alpha-helical triangular conformations. The biologically active
  form is thought to be a tetramer. The protein is expressed along with six other proteins, some of which
  are related to iron storage and haem biosynthesis [[cite:PUB00039697]].