Function of phospholamban is
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
Regulates Na+K+
Transports calcium out of mitochondria
Collects calcium into sarcoplasmic reticulum
Binds actin with myosin