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  • How Ca2+-ATPase pumps ions ...
    Toyoshima, Chikashi

    Biochimica et biophysica acta 1793, Issue: 6
    Journal Article

    Ca2+-ATPase of muscle sarcoplasmic reticulum is an ATP-powered Ca2+-pump that establishes a >10,000 fold concentration gradient across the membrane. Its crystal structures have been determined for 9 different states that cover nearly the entire reaction cycle. Presented here is a brief structural account of the ion pumping process, with emphasis on why the structure has to be so.