ryanodine receptor calcium release channel. Regulates communication between transverse-tubules and sarcoplasmic reticulum. Contraction of cardiac muscle is triggered by release of calcium ions from SR following depolarization of T-tubules. Phosphorylation by PKA dissociates FKBP12.6 from RYR2. Two splice isoforms have been described. Note: This description may include information from UniProtKB.
Protein type: Channel, ligand-gated; Membrane protein, integral; Membrane protein, multi-pass; Transporter; Transporter, ion channel
Molecular Function: calcium channel activity; calcium ion binding; calcium-induced calcium release activity; calcium-release channel activity; calmodulin binding; enzyme binding; identical protein binding; ion channel binding; protein binding; protein self-association; ryanodine-sensitive calcium-release channel activity
Biological Process: BMP signaling pathway; calcium ion transport; calcium-mediated signaling; cardiac muscle contraction; cardiac muscle hypertrophy; cell communication by electrical coupling involved in cardiac conduction; cellular calcium ion homeostasis; cellular response to caffeine; cellular response to epinephrine stimulus; detection of calcium ion; embryonic heart tube morphogenesis; establishment of protein localization to endoplasmic reticulum; left ventricular cardiac muscle tissue morphogenesis; positive regulation of heart rate; positive regulation of sequestering of calcium ion; positive regulation of the force of heart contraction; Purkinje myocyte to ventricular cardiac muscle cell signaling; regulation of atrial cardiac muscle cell action potential; regulation of AV node cell action potential; regulation of cardiac muscle contraction by calcium ion signaling; regulation of cardiac muscle contraction by regulation of the release of sequestered calcium ion; regulation of cytosolic calcium ion concentration; regulation of heart rate; regulation of SA node cell action potential; regulation of ventricular cardiac muscle cell action potential; release of sequestered calcium ion into cytosol; release of sequestered calcium ion into cytosol by sarcoplasmic reticulum; response to caffeine; response to hypoxia; response to muscle activity; response to muscle stretch; response to redox state; sarcoplasmic reticulum calcium ion transport; ventricular cardiac muscle cell action potential; Wnt receptor signaling pathway through beta-catenin