id: Pfam:PF13387
pfam_id: PF13387
name: Lnb N-terminal periplasmic domain
short_name: Lnb_N
seed_status: EX_DUF
characterization_status: UNSCORED
curation_status: SEEDED
source_url: https://www.ebi.ac.uk/interpro/api/entry/pfam/PF13387
counters:
  proteins: 4837
  matches: 4839
  proteomes: 3704
  taxa: 5476
  structures: 0
  alphafold_models: 2926
  domain_architectures: 15
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:IPR025178
description: This domain, previously known as DUF4105, is found N-terminal in Lipoprotein N-acyltransferase
  Lnb from Bacteroides and related uncharacterised bacterial proteins. Lnb functions as a lipoprotein
  N-acyltransferase in its native cell background [[cite:PUB00158892]]. It is composed of two domains,
  N-terminal (this entry) and C-terminal alpha- helical transmembrane domain. The domain represented by
  this entry contains a highly conserved histidine residue and a well-conserved NCT motif. Its predicted
  structure has a significant similarity to the papain-like cysteine peptidases. In addition, the putative
  catalytic triad Asn-His-Cys is highly conserved. This domain is also found in combination with other
  domains.