What Is a Tropomyosin?
Tropomyosin is a protein that is involved in the contraction of skeletal muscle. It is, in fact, the compound responsible for preventing muscles from contracting when they are at rest. This protein acts as a block during the chemical process that produces muscle contraction by wrapping itself around chains of another protein found in muscle cells known as actin. A third protein called myosin must be able to bind to sites along this actin protein in order for muscles to contract. It is this binding of the two proteins that tropomyosin obstructs.
