title: Inactivation of beef heart mitochondrial F1-ATPase by the 2',3'-dialdehyde derivatives of adenine nucleotides.
abstract: Beef heart mitochondrial F1-ATPase was inactivated by the 2',3'-dialdehyde derivatives of ATP, ADP and AMP (oATP, oADP, oAMP). In the absence of Mg2+, inactivation resulted from the binding of 1 mol nucleotide analog per active unit of F1. The most efficient analog was oADP, followed by oAMP and oATP. Complete inactivation was correlated with the binding of about 11 mol [14C]oADP/mol F1. After correction for non-specific labeling, the number of specifically bound [14C]oADP was 2-3 mol per mol F1. By SDS-polyacrylamide gel electrophoresis, [14C]oADP was found to bind covalently mainly to the alpha and beta subunits. In the presence of Mg2+, oATP behaved as a substrate and was slowly hydrolyzed.
mesh_terms: D000244:Adenosine Diphosphate / Q000031:analogs & derivatives* / Q000378:metabolism / Q000494:pharmacology; D000249:Adenosine Monophosphate / Q000031:analogs & derivatives* / Q000378:metabolism / Q000494:pharmacology; D000255:Adenosine Triphosphate / Q000031:analogs & derivatives* / Q000378:metabolism / Q000494:pharmacology; D000818:Animals; D002417:Cattle; D004305:Dose-Response Relationship, Drug; D007700:Kinetics; D008274:Magnesium / Q000494:pharmacology; D008929:Mitochondria, Heart / Q000201:enzymology; D006180:Proton-Translocating ATPases / Q000037:antagonists & inhibitors* / Q000378:metabolism
chemical_list: C041129:adenosine 5'-monophosphate 2',3'-dialdehyde; D000249:Adenosine Monophosphate; C017199:2',3'-dialdehyde ATP; D000244:Adenosine Diphosphate; C018808:adenosine 5'-diphosphate 2',3'-dialdehyde; D000255:Adenosine Triphosphate; D006180:Proton-Translocating ATPases; D008274:Magnesium