RyR is one kind of Ca~(2+) channels existed in endoplasmic reticulum (ER) / sarcoplasmic reticulum ( SR) of cells, which is composed of four subunits, and its higher structure is tetraploid.

• RyR是一种存在于细胞内质网(endoplasmic reticulum,ER)/肌浆网(sarcoplasmic reticulum,SR)上的Ca~(2+)通道,由4个亚单位组成,高级结构为四聚体。