Pyrimidine ribonucleotide biosynthesis

orotate phosphoribosyltransferase (RefSeq)
aspartate carbamoyltransferase catalytic subunit (RefSeq)
dihydroorotase (RefSeq)
carbamoyl phosphate synthase small subunit (RefSeq)
carbamoyl phosphate synthase large subunit (RefSeq)
orotidine 5'-phosphate decarboxylase (RefSeq)
dihydroorotate dehydrogenase 2 (RefSeq)
CTP synthetase (RefSeq)