Which of the following best describes the conditions of switch 1, switch 2 and the actin-cleft during myosin rigor?

Question

Quizplus · Accepted Answer

During myosin rigor, both switch 1 and switch 2 are closed, meaning that the myosin head is tightly bound to the actin filament and unable to release it. The actin-cleft is also closed because the power stroke has already occurred and the myosin head is now fixed in place, unable to detach from the actin filament. Therefore, the correct answer is switch 1 closed, switch 2 closed, actin-cleft closed (D).

Which of the Following Best Describes the Conditions of Switch