title: An active-site-directed adenosine triphosphate analogue binds to the beta-subunits of factor F1 mitochondrial adenosine triphosphatase with its triphosphate moiety.
abstract: The reaction of the mixed anhydride of [3H]ATP and mesitylenecarboxylic acid and soluble mitochondrial adenosine triphosphatase is accompanied by the covalent binding of one molecule of the inhibitor to a molecule of the enzyme and results in the inhibition of adenosine triphosphatase activity by more than 90%. The electrophoresis of adenosine triphosphatase modified by reaction with the mixed anhydride of [3H]ATP and mesitylenecarboxylic acid in polyacrylamide gel in the presence of sodium dodecyl sulphate showed that the inhibitor is bound to the beta-subunit of the enzyme. The results suggest that ATP may also bind to the beta-subunit of the adenosine triphosphatase with its triphosphate moiety.
mesh_terms: D000251:Adenosine Triphosphatases / Q000037:antagonists & inhibitors* / Q000494:pharmacology; D000255:Adenosine Triphosphate / Q000031:analogs & derivatives* / Q000378:metabolism; D000812:Anhydrides; D000818:Animals; D001565:Benzoates; D001665:Binding Sites; D002417:Cattle; D004591:Electrophoresis, Polyacrylamide Gel; D008929:Mitochondria, Heart / Q000201:enzymology*; D011485:Protein Binding; D014992:Xylenes
chemical_list: D000812:Anhydrides; D001565:Benzoates; D014992:Xylenes; C019471:mesitylenecarboxylic acid; D000255:Adenosine Triphosphate; D000251:Adenosine Triphosphatases