Journal
SCIENCE CHINA-LIFE SCIENCES
Volume 54, Issue 8, Pages 725-732Publisher
SCIENCE PRESS
DOI: 10.1007/s11427-011-4207-5
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Nicotinic acid dinucleotide phosphate (NAADP) is unique amongst Ca2+ mobilizing messengers in that its principal function is to mobilize Ca2+ from acidic organelles. Early studies indicated that it was likely that NAADP activates a novel Ca2+ release channel distinct from the well characterized Ca2+ release channels on the (sarco)-endoplasmic reticulum (ER), inositol trisphosphate and ryanodine receptors. In this review, we discuss the emergence of a novel family of endolysosomal channels, the two-pore channels (TPCs), as likely targets for NAADP, and how molecular and pharmacological manipulation of these channels is enhancing our understanding of the physiological roles of NAADP as an intracellular Ca2+ mobilizing messenger.
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