id: Pfam:PF13799
pfam_id: PF13799
name: Fibrillar ENdospore Appendages
short_name: F-ENAs
seed_status: EX_DUF
characterization_status: UNSCORED
curation_status: SEEDED
source_url: https://www.ebi.ac.uk/interpro/api/entry/pfam/PF13799
counters:
  proteins: 797
  matches: 855
  proteomes: 379
  taxa: 531
  structures: 3
  alphafold_models: 421
  domain_architectures: 11
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:IPR025237
description: This entry, previously known as DUF4183, represents the so-called Fibrillar ENdospore Appendages
  or F-ENAs found mainly in Bacilli lineage. F-ENA subunits assemble into trimeric units that stack axially
  into a helical ultrastructure fibers [[cite:PUB00163791]]. F-ENAs contribute to spore clustering. At
  the spore distal terminus, F-ENAs are decorated with a flexible tip fibrillum that consists of the collagen-like
  protein F-BclA [[cite:PUB00163791]].