Involvement of polyphosphoinositides in the ATP turnover of intact human erythrocytes and in the ATPase activity of purified membranes.
The phosphorylation cycle of polyphosphoinositides is an important process among the ATP-consuming reactions of human erythrocytes with "low" ATP-affinity. It serves to maintain a high level of PI-4,5-P2 in the membrane.
D000251:Adenosine Triphosphatases / Q000097:blood*; D000255:Adenosine Triphosphate / Q000097:blood*; D004910:Erythrocyte Membrane / Q000378:metabolism*; D006801:Humans; D007700:Kinetics; D008565:Membrane Proteins / Q000097:blood*; D009994:Osmolar Concentration; D018129:Phosphatidylinositol Phosphates; D010716:Phosphatidylinositols / Q000097:blood*; D010761:Phosphorus Radioisotopes; D010766:Phosphorylation
D008565:Membrane Proteins; D018129:Phosphatidylinositol Phosphates; D010716:Phosphatidylinositols; D010761:Phosphorus Radioisotopes; D000255:Adenosine Triphosphate; D000251:Adenosine Triphosphatases