What is Troponin-tropomyosin complex?

Answer 1

Salam. This complex is the main constituent of the thin filament of myofibril. Tropomyosin does mask (tropomaskin) the actin so as to avoid any myosin attachment to actin until some calcium attaches to troponin and unmask the actin from the mask of tropomyosin.

Answer 2

The troponin-tropomyosin complex is a regulatory system in muscle cells that controls muscle contraction. Troponin binds calcium ions and initiates the sliding of actin and myosin filaments, allowing for muscle fiber contraction. Tropomyosin blocks the binding sites on actin when muscles are at rest, and in the presence of calcium ions, it shifts position to allow myosin to interact with actin and generate force.

Answer 3

acting filament