title: Isolation and characterization of a Chinese hamster ovary cell mutant which accumulates UDP glucuronic acid and requires uridine for growth.
abstract: The isolation and characterization of a new pyrimidine requiring mutant of Chinese hamster ovary cells (CHO-Kl, pro-) is described. This mutant (P192) shows an absolute requirement for uridine for growth but is fully capable of pyrimidine nucleotide synthesis. P192 cells accumulate exceedingly large amounts of a compound identified by a variety of chromatographic, chemical, and labelling criteria as UDP glucuronic acid (UDPglcUA). This compound comprises approximately 60% of the acid-soluble nucleotides of P192 cells. Possible genetic mechanisms leading to the phenotype of P192 are examined, and the role of UDPglcUA in cellular metabolism is discussed.
mesh_terms: D000818:Animals; D002469:Cell Separation; D002478:Cells, Cultured; D006224:Cricetinae; D003412:Cricetulus; D005260:Female; D008168:Lung / Q000378:metabolism; D009154:Mutation; D010053:Ovary / Q000378:metabolism*; D011742:Pyrimidine Nucleotides / Q000096:biosynthesis; D014529:Uridine / Q000378:metabolism*; D014535:Uridine Diphosphate Glucuronic Acid / Q000378:metabolism*; D014539:Uridine Diphosphate Sugars / Q000378:metabolism*
chemical_list: D011742:Pyrimidine Nucleotides; D014539:Uridine Diphosphate Sugars; D014535:Uridine Diphosphate Glucuronic Acid; D014529:Uridine