Identify a protein that binds with Ca²⁺ ions in smooth muscles and initiates signal transduction.

Question

Quizplus · Accepted Answer

Calmodulin is a protein that binds with Ca2+ ions in smooth muscles and initiates signal transduction. It acts as a calcium sensor and regulates a variety of cellular processes, including muscle contraction. It is activated by Ca2+ binding, which induces a conformational change that enables it to bind with other proteins and initiate a signaling cascade. A combination of Ca2+ and other ions such as ²⁺ can further modulate calmodulin activity, making it a crucial mediator of smooth muscle function. Acetylcholine, epinephrine, and norepinephrine are neurotransmitters or hormones that can act on smooth muscles, but they do not directly bind with Ca2+ ions or initiate signal transduction on their own.

Identify a Protein That Binds with Ca2+ Ions in Smooth

Identify a Protein That Binds with Ca²⁺ Ions in Smooth