关键词: 1,4-dihydropyridine receptor CaV1.1 DHPR Excitation–contraction coupling L-type Skeletal muscle α1S

Mesh : Animals Calcium Channels, L-Type / metabolism Excitation Contraction Coupling Humans Ion Channel Gating Muscle, Skeletal / metabolism ultrastructure Ryanodine Receptor Calcium Release Channel / metabolism Sarcoplasmic Reticulum / metabolism

来  源:   DOI:10.1242/jeb.124123   PDF(Sci-hub)

Abstract:
In skeletal muscle, excitation-contraction (EC) coupling relies on the transmission of an intermolecular signal from the voltage-sensing regions of the L-type Ca(2+) channel (Ca(V)1.1) in the plasma membrane to the channel pore of the type 1 ryanodine receptor (RyR1) nearly 10 nm away in the membrane of the sarcoplasmic reticulum (SR). Even though the roles of Ca(V)1.1 and RyR1 as voltage sensor and SR Ca(2+) release channel, respectively, have been established for nearly 25 years, the mechanism underlying communication between these two channels remains undefined. In the course of this article, I will review current viewpoints on this topic with particular emphasis on recent studies.
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