[A tetrameric calcium release channel in the SARCOPLASMIC RETICULUM membrane of smooth muscle cells, acting oppositely to SARCOPLASMIC RETICULUM CALCIUM-TRANSPORTING ATPASES. It is important in skeletal and cardiac excitation-contraction coupling and studied by using RYANODINE. Abnormalities are implicated in ARRHYTHMIAS, CARDIAC and MUSCULAR DISEASES. ( MSH )]
UMLS (CSP) C0054493 - Amino Acid, Peptide, or Protein
- Receptor