title: A kinetic and binding study of the reactivity of Escherichia coli ATPase to N-ethoxycarbonyl-2-ethoxy-1,2-dihydroquinoline.
abstract: Escherichia coli H+-ATPase (ECF1) was inactivated in a time- and concentration-dependent manner by N-ethoxycarbonyl-2-ethoxy-1,2-dihydroquinoline (EEDQ), a selective carboxyl group reagent. Among the subunits of ECF1, only the beta subunit was modified by EEDQ. The reaction of 1 mol of EEDQ per mol of ECF1 resulted in total inactivation, in spite of the fact that the enzyme possesses three beta subunits.
mesh_terms: D000244:Adenosine Diphosphate / Q000494:pharmacology; D000249:Adenosine Monophosphate / Q000494:pharmacology; D000251:Adenosine Triphosphatases / Q000037:antagonists & inhibitors*; D000255:Adenosine Triphosphate / Q000494:pharmacology; D002413:Cations, Divalent; D004926:Escherichia coli / Q000201:enzymology*; D007700:Kinetics; D006180:Proton-Translocating ATPases; D011804:Quinolines / Q000494:pharmacology*
chemical_list: D002413:Cations, Divalent; D011804:Quinolines; D000249:Adenosine Monophosphate; C000470:EEDQ; D000244:Adenosine Diphosphate; D000255:Adenosine Triphosphate; D000251:Adenosine Triphosphatases; D006180:Proton-Translocating ATPases