Junctional sarcoplasmic reticulum protein 1 (Jsrp1)

Involved in skeletal muscle excitation/contraction coupling (EC), probably acting as a regulator of the voltage- sensitive calcium channel CACNA1S (By similarity). EC is a physiological process whereby an electrical signal (depolarization of the plasma membrane) is converted into a chemical signal, a calcium gradient, by the opening of ryanodine receptor calcium release channels.

May regulate CACNA1S membrane targeting and action. .