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Measurement of the CRAC Channel Fast Ca2+-Dependent Inactivation (FCDI)

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The CRAC Channel

Part of the book series: Methods in Molecular Biology ((MIMB,volume 1843))

Abstract

Fast Ca2+-dependent inactivation (FCDI) is a safety mechanism limiting Ca2+ entry through some types of Ca2+ channels, including Ca2+ release-activated Ca2+ (CRAC) channels. This type of inactivation is caused by Ca2+, which passes through Ca2+ channel and binds to a specific site within a short distance from the inner mouth of the pore, causing channel to shut.

The main technique that is used to investigate FCDI is whole-cell patch clamping. Since the cloning of the molecular components of the CRAC channel, STIM1 and Orai1, FCDI of CRAC channel has been studied using HEK293T heterologous expression system. In this paper we describe a method of quantifying CRAC channel FCDI by using instantaneous tail currents.

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Correspondence to Grigori Y. Rychkov .

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Rychkov, G.Y. (2018). Measurement of the CRAC Channel Fast Ca2+-Dependent Inactivation (FCDI). In: Penna, A., Constantin, B. (eds) The CRAC Channel. Methods in Molecular Biology, vol 1843. Humana Press, New York, NY. https://doi.org/10.1007/978-1-4939-8704-7_14

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  • DOI: https://doi.org/10.1007/978-1-4939-8704-7_14

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  • Publisher Name: Humana Press, New York, NY

  • Print ISBN: 978-1-4939-8702-3

  • Online ISBN: 978-1-4939-8704-7

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