Multiplicity of Ca2+ Messengers and Ca2+ Stores: A Perspective from Cyclic ADP-Ribose and NAADP

Author(s): Hon Cheung Lee

Journal Name: Current Molecular Medicine

Volume 4 , Issue 3 , 2004

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It is generally believed that multiple Ca2+ stores are present in cells, a notion that has now been made substantive by the discovery of multiple Ca2+ mobilizing messengers. Cyclic ADP-ribose (cADPR) and nicotinic acid dinucleotide phosphate (NAADP) are two such messengers that are derived from NAD and NADP, respectively. A wide variety of cells, from plants to mammals, including human, have been shown to be responsive to these two novel Ca2+ messengers. Not only are their structures and mechanisms of action different, their targeted Ca2+ stores are also distinct and separable. This article explores the implications of the multiplicity of Ca2+ stores in cellular signaling. Special emphasis will be put on the recent progress in the understanding of the physiological functions of NAADP.

Keywords: cyclic adp-ribose (cadpr), naadp, adp-ribosyl cyclase, cd38, mobilization

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Article Details

Year: 2004
Page: [227 - 237]
Pages: 11
DOI: 10.2174/1566524043360753
Price: $65

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