Function of Phospholamban is :: (A) Regulates Na K Pump, (B) Transpos calcium out of the mitrochondria, (C) Binds actin with myosin, (D) Collects calcium into the sarcoplasmic
Answer is D. D i.e. Collects calcium into the sarcoplasmic reticulum Phospholamban is a protein contained within the sarcoplasmic reticulum that inhibits the activity of sarcoplasmic calcium pumpQ. Inactivation of phospholamban results in an increase in calcium sequestration by sarcoplasmic reticulum.Q - In cardiac muscle, the rapid sequestration of Ca2+ shoens the duration of contraction. - In smooth muscle, sequestration causes the muscle to relax. - Phospholamban has little effect on skeletal muscle contraction.