Red blood cell calmodulin and Ca2+ pump ATPase: preliminary results of a species comparison.
Membrane-bound ATPases of the red blood cells from five mammalian species were compared. Large differences were observed in the specific activities of (Mg2+)-ATPase, (Na++K+Mg2+)-ATPase and (Ca2+/Mg2+)-ATPase. by contrast, calmodulin activities of red blood cell lysates from the five species were similar. Results are considered in light of possible mechanisms for regulation of Na+ and Ca2+ in red blood cells.
D000251:Adenosine Triphosphatases / Q000097:blood*; D000818:Animals; D001693:Biological Transport, Active; D017301:Ca(2+) Mg(2+)-ATPase; D002118:Calcium / Q000097:blood*; D002135:Calcium-Binding Proteins / Q000097:blood*; D000252:Calcium-Transporting ATPases / Q000097:blood; D002147:Calmodulin / Q000097:blood*; D004285:Dogs; D004789:Enzyme Activation; D004910:Erythrocyte Membrane / Q000378:metabolism*; D004912:Erythrocytes / Q000378:metabolism*; D006041:Goats; D006801:Humans; D011817:Rabbits; D012756:Sheep; D000254:Sodium-Potassium-Exchanging ATPase / Q000097:blood; D013045:Species Specificity
D002135:Calcium-Binding Proteins; D002147:Calmodulin; D000251:Adenosine Triphosphatases; D017301:Ca(2+) Mg(2+)-ATPase; C030704:magnesium sodium potassium ATPase; D000252:Calcium-Transporting ATPases; D000254:Sodium-Potassium-Exchanging ATPase; D002118:Calcium