Biochemistry Phospholamban is a protein leads to A That increase interaction of calcium with myofilaments B That leads to sequestration of calcium in endoplasmic reticulum C That leads to sequestration of calcium by mitochondria D That activates Ca/Na pump 💡 Explanation Phospholamban is a protein leads to ✓ Correct Answer: B. That leads to sequestration of calcium in endoplasmic reticulum