id: Pfam:PF06023
pfam_id: PF06023
name: CRISPR-associated exonuclease Csa1
short_name: Csa1
seed_status: EX_DUF
characterization_status: UNSCORED
curation_status: SEEDED
source_url: https://www.ebi.ac.uk/interpro/api/entry/pfam/PF06023
counters:
  proteins: 114
  matches: 120
  proteomes: 90
  taxa: 257
  structures: 0
  alphafold_models: 111
  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:IPR009260
description: CRISPR (clustered regularly interspaced short palindromic repeats) elements and cas (CRISPR-associated)
  genes are widespread in Bacteria and Archaea. The CRISPR/Cas system operates as a defense mechanism
  against mobile genetic elements (i.e., viruses or plasmids). Csa1 is part of the archaeal subtype I-A
  system. Cas1 has not yet been enzymatically characterised [[cite:PUB00073621]].