4.5 Article

IP3 receptors: Take four IP3 to open

Journal

SCIENCE SIGNALING
Volume 9, Issue 422, Pages -

Publisher

AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/scisignal.aaf6029

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Funding

  1. Wellcome Trust
  2. Biotechnology and Biological Sciences Research Council [1437702] Funding Source: researchfish

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Inositol 1,4,5-trisphosphate receptors (IP(3)Rs) and ryanodine receptors are the channels responsible for Ca2+ release from the endoplasmic and sarcoplasmic reticulum. Research in Science Signaling by Alzayady et al. show that all four IP3-binding sites within the tetrameric IP3R must bind IP3 before the channel can open, which has important consequences for the distribution of both IP3 and IP3R activity within cells.

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