What are the main components of myofilaments?

Myofilaments are primarily composed of two types of proteins: actin and myosin. Actin, a thin filament, forms a helical structure and provides sites for myosin binding during muscle contraction. Myosin, a thick filament, possesses motor domains that interact with actin to facilitate contraction through the sliding filament mechanism. Additionally, regulatory proteins such as tropomyosin and troponin play crucial roles in controlling the interaction between actin and myosin.