Myosin heavy chain

Myosin heavy chain is a protein found in muscle fibers that plays a key role in muscle contraction. It forms part of the larger myosin molecule, which acts like a motor within the muscle cells. When muscles contract, the myosin heavy chain interacts with another protein called actin, pulling on it to shorten the muscle. Different types of myosin heavy chains exist, influencing how fast or slow a muscle can contract. This protein is essential for muscle movement, strength, and endurance, and its variations help determine muscle performance in various activities.