The Store-Operated Calcium Current ICRAC: Nonlinear Activation by InsP3 and Dissociation from Calcium Release

@article{Parekh1997TheSC,
  title={The Store-Operated Calcium Current ICRAC: Nonlinear Activation by InsP3 and Dissociation from Calcium Release},
  author={Anant B Parekh and Andrea Fleig and Reinhold Penner},
  journal={Cell},
  year={1997},
  volume={89},
  pages={973-980}
}

• Anant B Parekh, Andrea Fleig, Reinhold Penner
• Published 1997 in Cell
• DOI:10.1016/S0092-8674(00)80282-2

Patch-clamp experiments aimed at determining the relationship between intracellular Ca2+ release and activation of store-operated calcium current I(CRAC) reveal that both agonist and InsP3-mediated activation of I(CRAC) are highly nonlinear, occurring over a narrow concentration range. Ca2+ release and Ca2+ influx can be dissociated, as they possess differential sensitivities to InsP3: low concentrations induce substantial Ca2+ release without any activation of I(CRAC), whereas micromolar… CONTINUE READING

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