The Intracellular Protein ________ Binds Calcium Ion

Question

The intracellular protein ________ binds calcium ion. This complex can then activate enzymes.
A) prostaglandin
B) phosphodiesterase
C) cyclic AMP
D) calmodulin
E) kinase

Accepted Answer

Calmodulin is an intracellular protein that binds to calcium ions, forming a complex that can activate a variety of enzymes. This activation occurs through conformational changes induced by the binding of calcium ions to specific sites on the calmodulin protein.