myosin
a protein of muscle
Source: Noland, George B. 1983. General Biology, 11th Edition. St. Louis, MO. C. V. Mosby ...
Myosins are a large family of motor proteins found in eukaryotic tissues. They are responsible for actin-based motility.
Contents
1 Structure and Function ...
Actomyosin
(Science: chemical) a protein complex of actin and myosin occurring in muscle. It is the essential contractile substance of muscle.
myosin
(my-uh-sin) [Gk. mys, muscle]
A type of protein filament that interacts with actin filaments to cause cell contraction.
Myosin A protein that forms the thick filaments of striated muscle; displays atpase activity at its globular head, which, in conjunction with the ability to reversibly bind actin at its fibrous region, ...
Myosin
Mitosis
(Date:3/28/2011)... Washington, DC March 28, 2011 The 2011 ... Cohen from Science . "HIV/AIDS: Eastern Europe" is ... July 9, 2010. The articles deal with the epidemic ... and the associated secondary infections as well as efforts ...
Myosin heads attach to binding sites on the actin filaments. The myosin heads swivel toward the center of the sarcomere, detach and then reattach to the nearest active site of the actin filament.
myosin A large protein of contractile tissue that forms the thick myofilaments of striated muscle. During contraction it combines with actin to form actomyosin.
Together myosin, actin, tropomyosin, and troponin make up over three-quarters of the protein in muscle fibers. Some two dozen other proteins make up the rest.
Bundle of myosin tails form a central stalk
Globular heads attach to specific sites on actin filaments
Myosin heads contain ATPase that hydrolyses ATP
Neuromuscular Junction ...
On the other hand, XNU + BLASTP is, in some cases, able to detect regions of similarity in the myosin heavy chain family, which has some members with a minimal amount of repetitive region.
The contractile ring that produces cell cleavage is composed of an organized cytoskeletal network that includes actin and bipolar myosin-II filaments working together in a sliding action that mimics muscle contraction.
Microfilaments' association with the protein myosin is responsible for muscle contraction. Microfilaments can also carry out cellular movements including gliding, contraction, and cytokinesis.
Microtubules ...
When the actin and myosin contract in the muscles, the muscle shortens and the bones are pulled closer together. Muscles called flexors force your joints to bend. Muscles called extensors cause your limbs to straighten.
Smooth muscle fibers, shown in Figure 12, lack the banding, although actin and myosin still occur. These cells function in involuntary movements and/or autonomic responses (such as breathing, secretion, ejaculation, birth, and certain reflexes).
Some of them have a protein in their stalk which can contract, just like the protein myosin in your muscles. The contraction of the stalk then acts like a syringe to inject the viral DNA into the host bacterial cell.
Proteins have many different functions: structure(collagen); movement (actin and myosin); catalysis (enzymes); transport (hemoglobin); regulation of cellular processes (insulin); ...
Actin filament (AK-tin) Part of the cytoskeleton. Actin filaments contract or lengthen to give cells the flexibility to move and change shape. Together with myosin, actin filaments are responsible for muscle contraction.
 See also: Protein, Cells, Action, Cell, Organ
  
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