>sp|B4F2M1|PYRI_PROMH Aspartate carbamoyltransferase regulatory chain OS=Proteus mirabilis GN=pyrI MTHDHKLKVEAIKRGTVIDHIPAQVGFKILSLFRLTETDERITVGFNLPSENLGKKDLIK IENVFLTAEQANRLAMYAPQATVNIIDDYQVVNKMALSLPELLEDVVPCPNSNCISHNEP VQSSFRVKKFASDVVLTCKYCEKEFERHAVIR