Calcium Binding to Sarcoplasmic Membranes

Fiehn, Walter; Migala, Andrea

doi:10.1111/j.1432-1033.1971.tb01387.x

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Calcium Binding to Sarcoplasmic Membranes

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Fiehn, Walter
Max Planck Institute for Medical Research, Max Planck Society;

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Migala, Andrea
Department of Biomedical Optics, Max Planck Institute for Medical Research, Max Planck Society;

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Citation

Fiehn, W., & Migala, A. (1971). Calcium Binding to Sarcoplasmic Membranes. European Journal of Biochemistry, 20(2), 245-248. doi:10.1111/j.1432-1033.1971.tb01387.x.

Cite as: https://hdl.handle.net/11858/00-001M-0000-002D-7F6E-9

Abstract

ATP-Supported calcium accumulation of sarcoplasmic vesicles is abolished when the vesicles are disrupted or made leaky. The native as well as the leaky sarcoplasmic membranes are characterized by a high intrinsic affinity for calcium which does not depend on ATP. Neither the number of the calcium binding sites nor their affinity for calcium is affected when the membranes are deprived of the phospholipids which are essential for the activity of the transport ATPase.