RYR2 Calcium channel that mediates the release of Ca(2+) from the sarcoplasmic reticulum into the cytoplasm and thereby plays a key role in triggering cardiac muscle contraction. Aberrant channel activation can lead to cardiac arrhythmia. In cardiac myocytes, calcium release is triggered by increased Ca(2+) levels due to activation of the L-type calcium channel CACNA1C. The calcium channel activity is modulated by formation of heterotetramers with RYR3. Required for cellular calcium ion homeostasis. Required for embryonic heart development. Belongs to the ryanodine receptor (TC 1.A.3.1) family. RYR2 subfamily. Detected in heart muscle (at protein level). Heart muscle, brain (cerebellum and hippocampus) and placenta. 2 alternatively spliced human isoforms have been reported. Note: This description may include information from UniProtKB.
Protein type: Channel, ligand-gated; Membrane protein, integral; Membrane protein, multi-pass; Transporter; Transporter, ion channel
Chromosomal Location of mouse Ortholog: 13 A1|13 4.38 cM
Cellular Component:  A band; calcium channel complex; extrinsic component of cytoplasmic side of plasma membrane; membrane; nuclear envelope; protein-containing complex; sarcolemma; sarcomere; sarcoplasmic reticulum; sarcoplasmic reticulum membrane; smooth endoplasmic reticulum; Z disc
Molecular Function:  calcium channel activity; calcium ion binding; calcium-induced calcium release activity; calcium-release channel activity; calmodulin binding; enzyme binding; identical protein binding; monoatomic ion channel activity; organic cyclic compound binding; protein binding; protein kinase A catalytic subunit binding; protein kinase A regulatory subunit binding; protein kinase binding; protein self-association; ryanodine-sensitive calcium-release channel activity; scaffold protein binding; suramin binding
Biological Process:  calcium ion transmembrane import into cytosol; calcium ion transmembrane transport; calcium ion transport; calcium ion transport into cytosol; calcium-mediated signaling; calcium-mediated signaling using intracellular calcium source; cardiac muscle contraction; cardiac muscle hypertrophy; cellular response to caffeine; cellular response to epinephrine stimulus; detection of calcium ion; embryonic heart tube morphogenesis; establishment of localization in cell; establishment of protein localization to endoplasmic reticulum; intracellular calcium ion homeostasis; left ventricular cardiac muscle tissue morphogenesis; manganese ion transmembrane transport; monoatomic ion transmembrane transport; monoatomic ion transport; multicellular organism development; negative regulation of cytosolic calcium ion concentration; positive regulation of ATPase-coupled calcium transmembrane transporter activity; 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; 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 calcium ion; response to hypoxia; response to magnesium ion; response to muscle activity; response to muscle stretch; response to redox state; sarcoplasmic reticulum calcium ion transport; striated muscle contraction; transmembrane transport; type B pancreatic cell apoptotic process; ventricular cardiac muscle cell action potential
Reference #:  E9Q401 (UniProtKB)
Alt. Names/Synonyms: 9330127I20Rik; calcium release channel; Cardiac Ca2+ release channel; Cardiac muscle ryanodine receptor; Cardiac muscle ryanodine receptor-calcium release channel; Ryanodine receptor 2; ryanodine receptor 2, cardiac; ryanodine receptor type 2; RYR-2; Ryr2; Type 2 ryanodine receptor
Gene Symbols: Ryr2
Molecular weight: 564,819 Da
Basal Isoelectric point: 5.74  Predict pI for various phosphorylation states
Select Structure to View Below


Protein Structure Not Found.

Cross-references to other databases:  STRING  |  Reactome  |  BioGPS  |  Pfam  |  RCSB PDB  |  Phospho.ELM  |  NetworKIN  |  UniProtKB  |  Entrez-Gene  |  GenPept  |  Ensembl Gene  |  Ensembl Protein