The molecular interaction between smooth muscle (SM) myosin and actin in the corpus cavernosum (CC) determines the erectile state of the penis. A key mechanism regulating this interaction and ...

Myosin in muscles behaves in a unique way, which might explain why muscles have such strong contractile power. A cartoon showing the asymmetry in the weak binding between myosin and actin that biases ...

This results in calcium rushing into the muscle, allowing actin and myosin to spring into action. Smooth muscle cells can be activated by neuronal signaling or by hormones.

When myosin pulls actin filaments together, the sarcomere length is reduced. In non-muscle and smooth muscle cells, actomyosin is not organized into sarcomeres.

Cremo, C.R. & Geeves, M.A. Interaction of actin and ADP with the head domain of smooth muscle myosin: implications for strain-dependent ADP release in smooth muscle. Biochemistry 37, 1969–1978 ...

Smooth muscle is involuntarily controlled, ... Smooth muscle operates by generating force as the muscle motor protein myosin and actin filaments move past each other.

This achievement could aid in the hunt for new ways to treat diseases associated with myosin malfunction. ... Single-molecule imaging reveals how myosin moves to bring about muscle contraction.

Cardiac muscle is highly organized and contains many types of cells, including fibroblasts, smooth muscle cells, ... These stripes occur due to alternating filaments that comprise myosin and actin ...

Does protein build muscle? The answer to this question is a resounding, ‘yes’. Muscle tissue is composed of a repeating structure of two protein filaments: myosin and actin. Myosin and actin ...

In addition, more than 90 percent of the total volume of a skeletal muscle cell is composed of muscle proteins, including the contractile proteins actin and myosin. When a muscle cell is activated ...