Myosins (/ ˈmaɪəsɪn, - oʊ -/ [1][2]) are a family of motor proteins (though most often protein complexes) best known for their roles in muscle contraction and in a wide range of other motility processes in eukaryotes. They are ATP -dependent and responsible for actin -based motility.

Feb 7, 2021 · Actin and myosin are both proteins that are found in every type of muscle tissue. Thick myosin filaments and thin actin filaments work together to generate muscle contractions and movement. Myosin is a type of molecular motor and converts chemical energy released from ATP into mechanical energy.

May 18, 2015 · Myosin is the prototype of a molecular motor—a protein that converts chemical energy in the form of ATP to mechanical energy, thus generating force and movement. The most striking variety of such movement is muscle contraction, which has provided the model for understanding actin-myosin interactions and the motor activity of myosin molecules.

Aug 27, 2024 · Myosin is a filamentous protein classified as a motor protein due to its ability to convert chemical energy from ATP hydrolysis into mechanical work. A single myosin molecule comprises six subunits: two heavy chains and four light chains. The structural organization of these chains is essential for its function.

Myosin is the predominantly expressed protein in muscle and serves as the molecular motor responsible for muscle contraction. It is also involved in actin-based cellular motility. Myosin has been extensively studied in biochemistry, and its enzymatic pathway and mechanism have been determined through rapid reaction studies.

In this review, to better understand these fundamental issues regarding hypertrophy and atrophy in skeletal muscle, we focus on the thick filament and its main component, myosin.

Each thick filament is composed of about 250 molecules of myosin. Myosin has two important roles: a structural one, as the building block for the thick filaments, and a functional one, as the catalyst of…

Apr 30, 2020 · Myosins are a superfamily of ATP-dependent, actin-based motor proteins. In addition to muscle contraction, myosins are involved in a wide range of motility functions in cells, including transport of intracellular cargo.

Myosins are cytoskeletal motor proteins that use energy derived from ATP hydrolysis to generate force and movement along actin filaments.

Myosins are a superfamily of molecular motors that convert the chemical energy of ATP hydrolysis into directed motion along the filamentous protein actin.