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: Transporter; Membrane protein, multi-pass; Channel, ligand-gated; Membrane protein, integral; Transporter, ion channel
Cellular Component: sarcoplasmic reticulum membrane; protein complex; membrane; sarcoplasmic reticulum; plasma membrane; Z disc
Molecular Function: calcium-induced calcium release activity; calmodulin binding; identical protein binding; protein binding; enzyme binding; protein self-association; calcium-release channel activity; calcium channel activity; calcium ion binding; intracellular ligand-gated calcium channel activity; ryanodine-sensitive calcium-release channel activity
Biological Process: positive regulation of sequestering of calcium ion; cytosolic calcium ion homeostasis; regulation of heart rate; calcium-mediated signaling; response to redox state; positive regulation of heart rate; Wnt receptor signaling pathway through beta-catenin; release of sequestered calcium ion by sarcoplasmic reticulum into cytosol; response to caffeine; cellular calcium ion homeostasis; BMP signaling pathway; release of sequestered calcium ion into cytosol; calcium ion transport; response to hypoxia; detection of calcium ion; transmembrane transport; cardiac muscle contraction
SS: The number of records in which this modification site was determined using site-specific methods. SS methods include amino acid sequencing, site-directed mutagenesis, modification site-specific antibodies, specific MS strategies, etc.