orotate + 5-phospho-alpha-D-ribose 1-diphosphate => orotidine 5'-phosphate + diphosphate
orotate + 5-phospho-alpha-d-ribose 1-diphosphate => orotidine 5'-phosphate + diphosphate
orotate + 5-phospho-alpha-D-ribose 1-diphosphate => orotidine 5'-phosphate + diphosphate
orotate + 5-phospho-alpha-d-ribose 1-diphosphate => orotidine 5'-phosphate + diphosphate