Abstract:The sarco(endo)plasmic reticulum calcium (Ca2+) ATPase (SERCA) pump is a major regulator of cytosolic Ca2+ in striated muscle. Sarcolipin (SLN) reduces SERCA-mediated Ca2+ pumping efficiency and is a key regulator of muscle metabolism and contractile function. With SERCA activity comprising approximately 12% of whole-body metabolic rate, the inefficient SERCA Ca2+ cycling promoted by SLN would be predicted to increase metabolic rate. Although SLN is involved in adaptive diet-induced thermogenesis and overexpre… Show more
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