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Quantal Ca2+ release mediated by very few IP3 receptors that rapidly inactivate allows graded responses to IP3

Abstract:

Inositol 1,4,5-trisphosphate receptors (IP3Rs) are intracellular Ca2+ channels that link extracellular stimuli to Ca2+ signals. Ca2+ release from intracellular stores is “quantal”: low IP3 concentrations rapidly release a fraction of the stores. Ca2+ release then slows or terminates without compromising responses to further IP3 additions. The mechanisms are unresolved. Here, we synthesize a high-affinity partial agonist of IP3Rs and use it to demonstrate that quantal responses do not require ...

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Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1016/j.celrep.2021.109932

Authors


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Institution:
University of Oxford
Division:
MSD
Department:
Pharmacology
Oxford college:
University College
Role:
Author
ORCID:
0000-0003-3255-9135
Publisher:
Cell Press
Journal:
Cell Reports More from this journal
Volume:
37
Issue:
5
Article number:
109932
Publication date:
2021-11-02
Acceptance date:
2021-10-13
DOI:
ISSN:
2211-1247
Language:
English
Keywords:
Pubs id:
1202840
Local pid:
pubs:1202840
Deposit date:
2021-10-18

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