The regulation of smooth muscle contraction is mediated by the phosphorylation of ____ in response to calcium binding to ____.

Question

Quizplus · Accepted Answer

Smooth muscle contraction is regulated by the interaction of calcium ions with calmodulin, a calcium-binding protein. This complex then activates myosin light chain kinase, leading to phosphorylation of myosin and subsequent actin-myosin cross-bridge cycling for contraction. Troponin and actin are involved in the regulation of skeletal and cardiac muscle contraction, not smooth muscle contraction.

The Regulation of Smooth Muscle Contraction Is Mediated by the Phosphorylation