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. Author manuscript; available in PMC: 2012 Jan 1.
Published in final edited form as: J Mol Cell Cardiol. 2010 Aug 31;50(1):43–49. doi: 10.1016/j.yjmcc.2010.08.021

Fig. 1.

Fig. 1

Schematic representation of HRC interactions within the SR. The interactions are indicated with a star. HRC could directly bind either the RyR quaternary complex partner triadin or SERCA (upper panel). These interactions are Ca2+-sensitive (lower panel) and HRC may function as a sensor of intra-SR Ca2+-changes, regulating SR Ca2+-release and/or uptake.