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Which step allows actin and myosin to release from each other?

an ATP molecule attaches to myosin apex answers


What are the two contractile proteins of muscle?

The two contractile proteins of muscle are actin and myosin. Actin is a thin filament, while myosin is a thick filament. They interact with each other to generate the force required for muscle contraction.


Atp allows what filaments to release and reset?

ATP allows actin and myosin filaments to release from each other during muscle contraction by assisting in the detachment of the myosin heads from actin. It also helps in resetting the myosin heads for the next contraction cycle by providing energy for the process of cross-bridge formation.


Do Sarcomeres produce actin and myosin?

Sarcomeres do not produce actin and myosin. Actin and myosin are protein filaments that are found within sarcomeres and are responsible for muscle contraction. Sarcomeres contain organized arrangements of actin and myosin filaments that slide past each other during muscle contraction.


What prevents actin myofilaments from sliding backward when a myosin head releases?

During contraction, there are always some myosin heads attached to the actin myofilament when other myosin heads are detaching.


What other protein is involved in skeletal muscle contraction?

Troponin is another protein involved in skeletal muscle contraction. It works in conjunction with tropomyosin to regulate the interaction between actin and myosin filaments during muscle contraction.


What are the thick protein filaments in the cell made of?

The thick protein filaments in a cell are primarily made of a protein called myosin. Myosin filaments are involved in muscle contraction and various other cellular processes such as cell motility and cytokinesis.


In addition to myosin what other protein is involved in skeletal muscle contraction?

Myosin acts with Actin during muscle contraction


What heads does actin attach to?

Actin filaments primarily interact with myosin heads during muscle contraction. Myosin heads attach to actin filaments through the formation of cross-bridges, enabling the sliding mechanism that results in muscle shortening. Additionally, actin can associate with other protein complexes, such as those involved in cellular movement and shape maintenance, but myosin is the primary motor protein interacting with actin in muscle cells.


What occurs when actin and myosin filaments slide over each other?

The power stroke of the cross bridge which binds ATP disconnecting it from the actin.


What is made of myosin?

Myosin is a protein primarily found in muscle cells. It plays a key role in muscle contraction by interacting with actin filaments to generate movement. Myosin is also found in other cell types where it has various functions related to cellular movement and transport.


Where do myosin cross bridges attach during muscle contraction?

Myosin functions as an ATPase utilizing ATP to produce a molecular conformational change of part of the myosin and produces movement. Movement of the filaments over each other happens when the globular heads protruding from myosin filaments attach and interact with actin filaments to form crossbridges. The myosin heads tilt and drag along the actin filament a small distance (10-12 nm). The heads then release the actin filament and adopt their original conformation.