title: Creatine phosphate inhibition of heart 5'-nucleotidase appears due to contaminants.
abstract: Creatine phosphate does not inhibit 5'-nucleotidase preparations from rat, dog or guinea-pig hearts. Previously reported inhibitory effects must have been due to contaminants present in some commercial preparations of creatine phosphate.
mesh_terms: D015720:5'-Nucleotidase; D000818:Animals; D004285:Dogs; D004340:Drug Contamination; D005260:Female; D006168:Guinea Pigs; D008297:Male; D008861:Microsomes / Q000201:enzymology; D009206:Myocardium / Q000201:enzymology*; D009708:Nucleotidases / Q000037:antagonists & inhibitors*; D010725:Phosphocreatine / Q000494:pharmacology* / Q000592:standards; D051381:Rats; D011919:Rats, Inbred Strains
chemical_list: D010725:Phosphocreatine; D009708:Nucleotidases; D015720:5'-Nucleotidase