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3.A.1.5.41
Oligopeptide transporter, OppABCDF/MppA/YgiS.  MppA is a murein peptide receptor, and YgiS is a bile acid (e.g., cholate, deoxycholate) receptor that may use the Opp system for uptake.  YgiS mRNA is degraded by the toxin MgsR which is regulated by the antitoxin, MgsA and this loss of the mRNA protects the cell against bile acid stress (Kwan et al. 2015).

Accession Number:P0AFH2
Protein Name:Oligopeptide transport system permease protein OppB
Length:306
Molecular Weight:33443.00
Species:Escherichia coli (strain K12) [83333]
Number of TMSs:6
Location1 / Topology2 / Orientation3: Cell inner membrane1 / Multi-pass membrane protein2
Substrate Oligopeptides

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Predict TMSs (Predict number of transmembrane segments)
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FASTA formatted sequence
1:	MLKFILRRCL EAIPTLFILI TISFFMMRLA PGSPFTGERT LPPEVMANIE AKYHLNDPIM 
61:	TQYFSYLKQL AHGDFGPSFK YKDYSVNDLV ASSFPVSAKL GAAAFFLAVI LGVSAGVIAA 
121:	LKQNTKWDYT VMGLAMTGVV IPSFVVAPLL VMIFAIILHW LPGGGWNGGA LKFMILPMVA 
181:	LSLAYIASIA RITRGSMIEV LHSNFIRTAR AKGLPMRRII LRHALKPALL PVLSYMGPAF 
241:	VGIITGSMVI ETIYGLPGIG QLFVNGALNR DYSLVLSLTI LVGALTILFN AIVDVLYAVI 
301:	DPKIRY