Part 5/14:
Actin filaments: Act as tracks along which myosin moves.
Tropomyosin and troponin: Regulate access of myosin to actin binding sites.
Titan: Keeps myosin filaments centered within the sarcomere, ensuring proper contraction.
The detailed molecular dance involves ATP binding, hydrolysis, cross-bridge detachment, and reattachment, powering muscle contraction efficiently.