Homologous Superfamily

Carboxypeptidase-like, regulatory domain superfamily (IPR008969)

Short name: CarboxyPept-like_regulatory

Overlapping entries



This domain superfamily identifies a number of eukaryotic carboxypeptidases, these include carboxypeptidase D, E (H), N, X, X2 and Z. These are metallopeptidases belong to MEROPS peptidase family M14 (clan MC), subfamily M14B.

Carboxypeptidase D (CPD) is a new B-type metallocarboxypeptidase that is membrane bound and has an acidic pH optimum. A hydrophobic region at the N terminus represents the signal peptide, and one near the C terminus that probably represents the transmembrane anchor. A regulatory domain within the protein has been identified as a beta-sandwich, comprising 7 strands in 2 sheets in a greek-key topology. Some family members have an additional 1-2 strands to the common fold [PMID: 11080148].

The bacterial and archaeal sequences having this signature are variously annotated, examples are:

  • Hypothetical/conserved/membrane/cell surface protein
  • N-acetylglucosamine deacetylase
  • Side tail fibre protein homologue from lambdoid prophage Rac
  • Hypothetical tonB-linked outer membrane receptor
  • OmpA-related protein
  • Putative outer membrane protein, probably involved in nutrient binding
  • TonB-dependent receptor

This entry also includes the teneurin family members, which may function as cellular signal transducers.

Contributing signatures

Signatures from InterPro member databases are used to construct an entry.