>sp|Q21XI7|TRPA_ALBFT Tryptophan synthase alpha chain OS=Albidiferax ferrireducens GN=trpA MSRIARTFAGLKAQGRKALIPYVTAGFPFPDITPELMHAFVAGGADVIELGVPFSDPSAD GPVIQKAGDKALAAGIGMVQVLDMVRTFRTRDASTPVVLMGYANPVERYNQKHDRHDGKS AFVLDAAAAGVDGVLIVDYPPEECEAFAAELKSAGLDLIFLLAPTSTDERMQQVARVASG YVYYVSLKGVTGSGALDTGAVEAMLPRIRAHVQVPVGVGFGIRDAATARTIGQVADAVVI GSKIIQLIDEQPRDQVGPVAQKFLCEIRTALDN