PMID: 2103514Aug 1, 1990Paper

Rapidly exchanging Ca2+ stores of non-muscle cells

Seminars in Cell Biology
P VolpeJ Meldolesi

Abstract

The rapid and transient redistribution of calcium from intracellular stores is a key event of cell activation. The nature and molecular composition of intracellular Ca2+ stores of non-muscle cells are the object of intense investigation. In this paper, we review: (a) the experimental evidence in favor of the existence of intracellular, membrane-bound compartments specialized for uptake, storage and release of calcium, (b) the main protein components of rapidly exchanging Ca2+ stores, i.e. Ca2+ pump, intralumenal Ca2+ binding proteins (calsequestrin, calreticulin, etc.) and Ca2+ channels sensitive to either inositol 1,4,5-trisphosphate or Ca2+, caffeine and ryanodine, and (c) the relationship between Ca2+ stores and the endoplasmic reticulum.

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