Myosin light chain

A myosin light chain is a light chain (small polypeptide subunit) of myosin.

Myosin light chains are distinct and have their own properties, distinct from the heavy chains. They are not considered "myosins" but are components of the macromolecular complexes that make up the functional myosin enzymes. Myosin light chains may consist of two smaller subunits with weights of 17- 22 kDa of hexameric myosin II. Each pair of subunits is unique.