Scientists demonstrate severe muscle atrophy in postnatal mice lacking two critical myosins

Muscles are made up of proteins. Myosin, a fibrous protein, serves as a molecular motor and converts the chemical energy stored inside our body into mechanical energy. The synergistic association between the muscle proteins myosin and actin gives rise to skeletal muscle contraction and relaxation, thus allowing the body to move. Therefore, a decrease in muscle mass (i.e., skeletal muscle atrophy) results in reduced motor function.