Journal
BIOLOGY OF THE CELL
Volume 96, Issue 1, Pages 19-28Publisher
WILEY
DOI: 10.1016/j.biolcel.2003.12.001
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Changes in cystosolic Ca2+ concentration are critical for the regulation of numerous cellular events. Mobilisation of intracellular Ca2+ stores by Ca2+ mobilising messengers is a highly conserved mechanism whereby different agonists mediate their cellular effects. NAADP is the newest of these messengers to be described. Accumulating evidence suggests that NAADP targets a novel intracellular Ca2+ release channel that under certain conditions can inactivate prior to opening. These channels are likely located on Ca2+ stores distinct from the endoplasmic reticulum, the activation of which evokes complex changes in Ca2+ involving cross-talk with other intracellular Ca2+ channels. Recent demonstrations of changes in cellular NAADP levels by physiologically relevant stimuli establish the importance of this molecule in the control of calcium dynamics. (C) 2003 Elsevier SAS. All rights reserved.
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