PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 9890908-1 1999 Orotate phosphoribosyltransferase (OMP synthase, EC 2.4.2.10) forms the UMP precursor orotidine 5"-monophophate (OMP) from orotate and alpha-D-5-phosphoribosyl-1-pyrophosphate (PRPP). orotidine 5"-monophophate 86-111 uridine monophosphate synthetase Homo sapiens 0-33