title: Enzymes of pyrimidine metabolism in the musculus complexus of the chick during development.
abstract: The pattern of cytidylate and uridylate phosphatase, uridine phosphorylase, cytidine and cytosine deaminase activities has been studied in M. complexus during chick development. The comparison of these enzyme activities with thigh muscles ones has shown that quantitative and temporal changes occur, in parallel with the unusual pre-natal and early post-natal development of M. complexus. The results suggest that during the first period of incubation, UMP might follow the anabolic pathway UMP-UTP, which leads to cytidine nucleotides, while approaching the hatching, the catabolic pathway should prevail. In addition, immediately after hatching, pyrimidine metabolism is especially supported by cytidine nucleotides.
authors.affiliation: Istituto di Istologia ed Embrologia generale, Università di Bologna.
authors.forename: I
authors.initials: I
authors.lastname: Wegelin
authors.forename: G
authors.initials: G
authors.lastname: Pane
mesh_terms: D015720:5'-Nucleotidase / Q000032:analysis*; D000818:Animals; D002642:Chick Embryo / Q000378:metabolism; D002645:Chickens / Q000254:growth & development / Q000378:metabolism*; D003568:Cytidine Monophosphate / Q000378:metabolism; D024510:Muscle Development; D009124:Muscle Proteins / Q000032:analysis*; D009132:Muscles / Q000196:embryology / Q000201:enzymology*; D011743:Pyrimidines / Q000378:metabolism*; D013848:Thigh; D014542:Uridine Monophosphate / Q000378:metabolism; D014543:Uridine Phosphorylase / Q000032:analysis*
chemical_list: D009124:Muscle Proteins; D011743:Pyrimidines; D014542:Uridine Monophosphate; D014543:Uridine Phosphorylase; D015720:5'-Nucleotidase; D003568:Cytidine Monophosphate