pfam12911: OppC_N (This model is not part of the current CDD release)
N-terminal TM domain of oligopeptide transport permease C
Oligopeptide permeases (Opp) have been identified in numerous gram-negative and -positive bacteria. These transport systems belong to the superfamily of highly conserved ATP-binding cassette transporters. Typically, Opp importers comprise a complex of five proteins. The oligopeptide-binding protein OppA is responsible for the capture of peptides from the external medium. Two integral highly hydrophobic membrane spanning proteins, OppB and OppC, form a channel through the membrane used for peptide translocation. This N-terminal domain appears to be the first TM domain of the molecule.
Jiyao W et al.(2023). "The conserved domain database in 2023.",