id: Pfam:PF09685
pfam_id: PF09685
name: Magnetosome magnetite crystal formation protein family
short_name: MamF_MmsF
seed_status: EX_DUF
characterization_status: UNSCORED
curation_status: SEEDED
source_url: https://www.ebi.ac.uk/interpro/api/entry/pfam/PF09685
counters:
  proteins: 10008
  matches: 10011
  proteomes: 6722
  taxa: 9680
  structures: 0
  alphafold_models: 6286
  domain_architectures: 25
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:IPR019109
description: This entry represents the magnetosome MamF/MmsF protein family found in magnetotactic bacteria.
  These membrane proteins are involved in magnetite crystal formation within magnetosome organelles. They
  are not essential for biomineralization, but play a major role in controlling the size and shape of
  magnetite crystals. Loss of these proteins results in crystals that are approximately 75% of wild-type
  size with altered morphology. They are multi-pass membrane proteins associated with the magnetosome
  membrane and exhibit cumulative, partially redundant functions in regulating crystal growth. This family
  includes proteins from organisms that are not known to contain magnetosomes suggesting that this family
  of proteins have a broader function.