Orotate Phosphoribosyltransferase

**Definition:** The enzyme catalyzing the formation of orotidine-5'-phosphoric acid (orotidylic acid) from orotic acid and 5-phosphoribosyl-1-pyrophosphate in the course of pyrimidine nucleotide biosynthesis. EC 2.4.2.10.

**Tree numbers:** - D08.811.913.400.725.700

**Synonyms:** - OMPase - Orotidine-5'-Monophosphate Phosphohydrolase - Orotidine-5'-Phosphate Pyrophosphorylase - Orotidylic Acid Phosphorylase