buc:BU369 K00609 aspartate carbamoyltransferase catalytic subunit [EC:2.1.3.2] | (GenBank) pyrB; aspartate carbamoyltransferase catalytic chain buc:BU368 K00611 ornithine carbamoyltransferase [EC:2.1.3.3] | (GenBank) argF; ornithine carbamoyltransferase chain F