[Anion-sensitive ATPase of the rat heart mitochondria].
The properties of anion-sensitive ATPase of rat heart mitochondria were studied. Na2CO3, NaHCO3 and Na2SO3 stimualted ATPase activity by 69, 41 and 110%, respectively. Azide, tiocinate and perchlorate inhibited bicarbonate-stimulated ATPase. Bivalent cations increased ATPase activity in such a sequence: Zn2+ greater than or equal to Cd2+ greater than or equal to Co2+ greater than or equal to Mg2+ greater than or equal to Mn2+ greater than Ni2+. In the presence of bicarbonate and sulfite. ATPase activity was maximally stimulated with magnesium. Ni2+ and Ca2+-ions inhibited Mg2+-dependent activity of bicarbonate-stimulated ATPase. AMP uninhibited ATPase activity. The 4 mM concentration of ADP inhibited activity of HCO-3-ATPase. Activity of ATPases decreased at lower temperatures. The properties of anion-sensitive ATPase of rat heart mitochondria and that of HCO-2-ATPase of other cells are discussed.
D000227:Adenine Nucleotides / Q000494:pharmacology; D000251:Adenosine Triphosphatases / Q000378:metabolism*; D000818:Animals; D001639:Bicarbonates / Q000494:pharmacology; D002254:Carbonates / Q000494:pharmacology; D004573:Electrolytes / Q000494:pharmacology*; D008929:Mitochondria, Heart / Q000201:enzymology*; D051381:Rats; D013268:Stimulation, Chemical; D013447:Sulfites / Q000494:pharmacology
D000227:Adenine Nucleotides; D001639:Bicarbonates; D002254:Carbonates; D004573:Electrolytes; D013447:Sulfites; D000251:Adenosine Triphosphatases
Anionchuvstvitel'naia adenozintrifosfataza mitokhondriĭ serdtsa krysy.