>tr|A0A1Z1SZM3|A0A1Z1SZM3_PROMI Aspartate carbamoyltransferase regulatory chain OS=Proteus mirabilis GN=pyrI MTHDHKLKVEAIKRGTVIDHIPAQVGFKILSLFRLTETDERITVGFNLPSENLGKKDLIK IENVFLTAEQANRLAMYAPQATVNIIDDYQVVNKMALSLPELLEDVVPCPNSNCISHNEP VQSSFRVKKFASDVVLTCKYCEKEFERHAVIR