Function of phospholamban is: (A) Regulates Na+K+, (B) Transports calcium out of mitochondria, (C) Collects calcium into sarcoplasmic reticulum, (D) Binds actin with myosin
Answer is C. Phospholamban increases the activity of SERCA
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It causes accumulation of Ca2+ by sarcoplasmic reticulum
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It leads to Lusiotropic effect, Increase in rate of relaxation