>tr|A0A509C7F1|A0A509C7F1_9ENTR Aspartate carbamoyltransferase regulatory chain OS=Salmonella sp. NCTC 3046 GN=pyrI MTHDNKLQVEAIKCGTVIDHIPAQVGFKLLSLFKLTETDQRITIGLNLPSGEMGRKDLIK IENTFLTEEQVNQLALYAPQATVNRIDNYDVVGKSRPSLPERINNVLVCPNSNCISHAEP VSSSFAVKKRANDIALKCKYCEKEFSHYVVLAN