title: Pyrophosphate contamination in crystalline phosphocreatine: a source of error in kinetic studies using coupled enzymes.
mesh_terms: D003402:Creatine Kinase / Q000378:metabolism; D011756:Diphosphates / Q000494:pharmacology; D004305:Dose-Response Relationship, Drug; D004340:Drug Contamination; D007293:Inosine Triphosphate; D007700:Kinetics; D015879:Myosin Subfragments; D010725:Phosphocreatine / Q000592:standards*; D010726:Phosphodiesterase Inhibitors; D010744:Phosphoric Monoester Hydrolases / Q000037:antagonists & inhibitors*
chemical_list: D011756:Diphosphates; D015879:Myosin Subfragments; D010726:Phosphodiesterase Inhibitors; D010725:Phosphocreatine; D007293:Inosine Triphosphate; D003402:Creatine Kinase; D010744:Phosphoric Monoester Hydrolases