id: Pfam:PF07717
pfam_id: PF07717
name: Oligonucleotide/oligosaccharide-binding (OB)-fold
short_name: OB_NTP_bind
seed_status: EX_DUF
characterization_status: UNSCORED
curation_status: SEEDED
source_url: https://www.ebi.ac.uk/interpro/api/entry/pfam/PF07717
counters:
  proteins: 55636
  matches: 55670
  proteomes: 11620
  taxa: 19634
  structures: 160
  alphafold_models: 34331
  domain_architectures: 1449
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:IPR011709
description: This family is found towards the C-terminus of the DEAD-box helicases ([pfam:PF00270]). In
  these helicases it is apparently always found in association with [pfam:PF04408]. There do seem to be
  a couple of instances where it occurs by itself - e.g. [swissprot:Q84VZ2]. The structure PDB:3i4u adopts
  an OB-fold. helicases ([pfam:PF00270]). In these helicases it is apparently always found in association
  with [pfam:PF04408]. This C-terminal domain of the yeast helicase contains an oligonucleotide/oligosaccharide-binding
  (OB)-fold which seems to be placed at the entrance of the putative nucleic acid cavity. It also constitutes
  the binding site for the G-patch-containing domain of Pfa1p. When found on DEAH/RHA helicases, this
  domain is central to the regulation of the helicase activity through its binding of both RNA and G-patch
  domain proteins [[cite:PUB00092307]].