How is calmodulin activated? A) by binding both calcium and potassium B) by binding Ca²⁺ when the cytosolic concentration is greater than 500 nM C) by binding to a positively charged helix on another protein D) by binding Ca²⁺ only when calcium channels are open, allowing Ca²⁺ efflux from the cell E) None of the answers is correct.

Question

Quizplus · Accepted Answer

Calmodulin is activated by binding to Ca²⁺ when the cytosolic concentration of calcium ions is greater than 500 nM.

How Is Calmodulin Activated