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Sorcin is a 198 amino acid, soluble, resistance-related, calcium-binding cytosolic protein belonging to the penta-EF hand (PEF) family of calcium binding proteins and contains 4 EF-hand calcium-binding motifs. Human Sorcin is known to share 95% sequence identity with hamster Sorcin. It is known to associate with the sarcolemmal proteins Annexin VII, cardiac ryanodine receptors and L-type Ca2+ channels and thus influence the intracellular Ca (2+)-homeostasis. It is also important in the regulation of intracellular Ca2+ cycling and Ca2+ influx pathways in the heart and skeletal muscle during excitation-contraction. It is overproduced in many multi-drug resistance (MDR) cells and regulates cell apoptosis pathways, thus acting as a new MDR marker for prognosis of acute myeloid leukemia (AML) and a good target for anti-MDR drug development.
蛋白别名: 22 kDa protein; calcium binding protein amplified in mutlidrug-resistant cells; CP-22; CP22; H_RG167B05.1; Sorcin; V19
基因别名: 2210417O06Rik; 2900070H08Rik; CP-22; CP22; SCN; Sor; SRI; V19