Synonyms : OMPase, Orotidine-5'-Monophosphate Phosphohydrolase, Orotidine 5' Monophosphate Phosphohydrolase, Orotidine 5' Phosphate Pyrophosphorylase, Phosphohydrolase, Orotidine-5'-Monophosphate, Phosphoribosyltransferase, Orotate, Phosphorylase, Orotidylic Acid