The step of the cross-bridge cycle that immediately follows the attachment of ATP to the myosin head is referred to as the "powerstroke."

Question

Quizplus · Accepted Answer

The step of the cross-bridge cycle that immediately follows the attachment of ATP to the myosin head is actually the detachment of the myosin head from the actin filament. The powerstroke occurs after the myosin head binds to an actin monomer, releases the inorganic phosphate (Pi) from ATP hydrolysis, and undergoes a conformational change that moves the actin filament towards the center of the sarcomere.

The Step of the Cross-Bridge Cycle That Immediately Follows the Attachment