What proteins make up our muscles?

Muscles are primarily made up of two types of proteins: actin and myosin. These proteins are responsible for muscle contraction and work together in a structure called the sarcomere, which is the fundamental unit of muscle fiber. Actin forms thin filaments, while myosin forms thick filaments, and their interactions facilitate the contraction and relaxation of muscles during movement. Additionally, other proteins like tropomyosin and troponin play regulatory roles in this process.