Oligopeptide-binding protein

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Function

Oligopeptide-binding protein (Opp) is a component of the

oligopeptide permease which is an ABC-type transporter system. Opp binds polypeptides up to pentapeptide in length with high affinity. Opp is required for sporulation and competence. Opp carries oligopeptides to the membrane-associated oligopeptide permease[1].

Structural highlights

The bradykinin peptide is nestled between the 2 domains of Opp[2]. .

  • . Water molecule is shown as red sphere.

Oligopeptide-binding protein (grey) complex with peptide bradykinin (cyan) and Cl- ion (green) (PDB entry 3drg)

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3D structures of oligopeptide-binding protein3D structures of oligopeptide-binding protein

See ABC transporter

ReferencesReferences

  1. Monnet V. Bacterial oligopeptide-binding proteins. Cell Mol Life Sci. 2003 Oct;60(10):2100-14. PMID:14618258 doi:http://dx.doi.org/10.1007/s00018-003-3054-3
  2. Berntsson RP, Doeven MK, Fusetti F, Duurkens RH, Sengupta D, Marrink SJ, Thunnissen AM, Poolman B, Slotboom DJ. The structural basis for peptide selection by the transport receptor OppA. EMBO J. 2009 Mar 19. PMID:19300437 doi:emboj200965

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Michal Harel, Alexander Berchansky, Joel L. Sussman