myosins

Example:Research indicates that the myosin heads are the actual force generators in muscle fiber contraction.

Definition:The protein region in myosin responsible for binding to actin filaments and using ATP to undergo conformational changes that cause muscle contraction.

Example:Studies on myosin ATPase activity can provide insights into the regulation of muscle contraction.

Definition:An enzyme in the myosin head that catalyzes the hydrolysis of ATP to ADP and inorganic phosphate.

Example:Myosin II isoforms contribute to a wide range of contractile events, including rhythmic contractions of the heart.

Definition:A form of myosin found in smooth muscle and skeletal muscle, responsible for contraction and providing the basis for the sliding filament theory of muscle contraction.