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Review
. 2009 Jun;1793(6):941-6.
doi: 10.1016/j.bbamcr.2008.10.008. Epub 2008 Oct 29.

How Ca2+-ATPase pumps ions across the sarcoplasmic reticulum membrane

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Free article
Review

How Ca2+-ATPase pumps ions across the sarcoplasmic reticulum membrane

Chikashi Toyoshima. Biochim Biophys Acta. 2009 Jun.
Free article

Abstract

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.

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