id: Pfam:PF03860
pfam_id: PF03860
name: Copper storage protein
short_name: Csp
seed_status: EX_DUF
characterization_status: UNSCORED
curation_status: SEEDED
source_url: https://www.ebi.ac.uk/interpro/api/entry/pfam/PF03860
counters:
  proteins: 6459
  matches: 6459
  proteomes: 4703
  taxa: 6934
  structures: 28
  alphafold_models: 3965
  domain_architectures: 8
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:IPR005560
description: This domain is found in a number of copper storage proteins. It contains a repeat of highly
  conserved cysteines. The cysteines mostly follow a C-X(2)-C-X(3)-C-X(2)-C-X(3) pattern, though they
  often appear at other positions in the repeat as well [[cite:PUB00016669]]. These residues are involved
  in copper binding. This domain folds into a four helical up-and-down bundle [[cite:PUB00161196],[cite:PUB00161197]].