Backbone 1H, 13C and 15N assignments of a 59 kDa Salmonella typhimurium periplasmic oligopeptide binding protein, OppA.

Salmonella typhimurium OppA is the periplasmic oligopeptide-binding protein. Backbone resonances of OppA(D419N) on its own were assigned for approximately 90% of residues. Missing residues are localised around the ligand-binding site, suggesting conformational flexibility in the unliganded state.