PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 516531-2 1979 Simultaneously, activity of the key enzymes, participating in metabolism of orotic acid and of uridine, was measured: OMP-pyrophosphorylase /EC 2.4.2.10, orotidine-5"-phosphate: purophosphate phosphorybosyl transferase/ and uridine kinase /EC 2.7.1.48, ATP: uridine-5"-phosphotransferase/. Orotic Acid 76-87 uridine-cytidine kinase 2 Homo sapiens 224-238