Tissue Specificity | |
Post Translational Modifications | The alpha-1S subunit is found in two isoforms in the skeletal muscle: a minor form of 212 kDa containing the complete amino acid sequence, and a major form of 190 kDa derived from the full-length form by post-translational proteolysis close to Phe-1690. Phosphorylated. Phosphorylation by PKA activates the calcium channel. Both the minor and major forms are phosphorylated in vitro by PKA. Phosphorylation at Ser-1575 is involved in beta-adrenergic-mediated regulation of the channel. |
Function | Pore-forming, alpha-1S subunit of the voltage-gated calcium channel that gives rise to L-type calcium currents in skeletal muscle. Calcium channels containing the alpha-1S subunit play an important role in excitation-contraction coupling in skeletal muscle via their interaction with RYR1, which triggers Ca(2+) release from the sarcplasmic reticulum and ultimately results in muscle contraction. Long-lasting (L-type) calcium channels belong to the 'high-voltage activated' (HVA) group. |
Protein Name | Voltage-Dependent L-Type Calcium Channel Subunit Alpha-1sCalcium Channel - L Type - Alpha-1 Polypeptide - Isoform 3 - Skeletal MuscleDihydropyridine ReceptorDhprVoltage-Gated Calcium Channel Subunit Alpha Cav1.1 |
Database Links | |
Cellular Localisation | Cell MembraneSarcolemmaT-TubuleMulti-Pass Membrane Protein |
Alternative ELISA Names | Voltage-Dependent L-Type Calcium Channel Subunit Alpha-1s ELISA kitCalcium Channel - L Type - Alpha-1 Polypeptide - Isoform 3 - Skeletal Muscle ELISA kitDihydropyridine Receptor ELISA kitDhpr ELISA kitVoltage-Gated Calcium Channel Subunit Alpha Cav1.1 ELISA kitCacna1s ELISA kitCach1 ELISA kitCach1b ELISA kitCacn1 ELISA kitCacnl1a3 ELISA kit |
output | |
Information sourced from Uniprot.org