Recombinant Human Calsequestrin-1/CASQ1 Protein
Size: 100μg
Catalogue Numbers: PKSH030556-100
Citations, Manuals and MSDS Available upon request.
Abbreviation: Calsequestrin-1; CASQ1
Target Synonym: CASQ; PDIB1; VMCQA
UNIProt ID: P31415
Research Areas: Signal Transduction; Cardiovascular; Cancer; metabolism;
Target Species: Human
Expression Host: E.coli
Fusion Tag: None
Accession: P31415
Background: Calsequestrin-1 is an isoform of calsequestrin. Calsequestrin is a calcium-binding protein of the sarcoplasmic reticulum. It helps hold calcium in the cisterna of the sarcoplasmic reticulum after a muscle contraction, even though the concentration of calcium in the sarcoplasmic reticulum is much higher than in the cytosol. Two forms of calsequestrin have been identified: Calsequestrin-2 and Calsequestrin-1. Calsequestrin-1 is found in fast skeletal muscle. The release of calsequestrin-bound calcium (through a calcium release channel) triggers muscle contraction. The active protein is not highly structured, more than 50% of it adopting a random coil conformation. When calcium binds there is a structural change whereby the alpha-helical content of the protein increases from 3 to 11%. Both forms of calsequestrin are phosphorylated by casein kinase 2, but the cardiac form is phosphorylated more rapidly and to a higher degree. Calsequestrin-1 is also secreted in the gut where it deprives bacteria of calcium ions.
Sequence: Gln35-Asp396
Purity: > 80 % as determined by reducing SDS-PAGE.
Formulation: Lyophilized from sterile 50mM Tris, 10% glycerol, pH 7.5
Normally 5 % - 8 % trehalose, mannitol and 0.01% Tween80 are added as protectants before lyophilization.
Please refer to the specific buffer information in the printed manual.
Reconstitution: Please refer to the printed manual for detailed information.
Endotoxin: Please contact us for more information.
Calculated MW: 41.8 kDa
Observed MW: 52 kDa
Storage: Generally, lyophilized proteins are stable for up to 12 months when stored at -20 to -80℃. Reconstituted protein solution can be stored at 4-8℃ for 2-7 days. Aliquots of reconstituted samples are stable at < -20℃ for 3 months.
Shipping: This product is provided as lyophilized powder which is shipped with ice packs.
Research Use Only