Mg2+ Homeostasis: The Mg2+nificent TRPM Chanzymes

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Mg2+ Homeostasis: The Mg2+nificent TRPM Chanzymes

TRPM6 and TRPM7 are distinct from all other ion channels in that they are composed of linked channel and protein kinase domains. Recent studies demonstrate that these 'chanzymes' are essential for Mg(2+) homeostasis, which is critical for human health and cell viability.

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Ethanol (EtOH) administration to rats for 4 wk markedly decreased Mg(2+) content in several tissues, including liver. Total cellular Mg(2+) accounted for 26.8 +/- 2.4 vs. 36.0 +/- 1.4 nmol Mg(2+)/mg protein in hepatocytes from EtOH-fed and control rats, respectively, and paralleled a 13% decrease in cellular ATP content. Stimulation of alpha(1)- or beta-adrenergic receptor or acute EtOH adminis...

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Over the past decades, the clinical relevance and biological significance of Mg2+ have been thoroughly documented. Although multiple Mg2+-transport pathways have been biophysically characterized, the molecular identity of the postulated components of Mg2+-homeostasis regulation in vertebrates remain undefined. Recent advances in the fields of genetics, genomics and proteomics, and novel technol...

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ژورنال

عنوان ژورنال: Current Biology

سال: 2003

ISSN: 0960-9822

DOI: 10.1016/j.cub.2003.09.048