What are the heavy chains of myosin?

myosin is a family of motor proteins that work on the extension of muscle fibers and create movement and strength. Myosin heavy chains grouped together refer to fibers that fit along the muscle fiber of a similar way to the latch or lever captures the tooths of hor of hor of hornet or gear. One of the two proteins responsible for all the engine movement is myosin in the form of a molecule with a head and a tail reminiscent of two fibers twisted together; They extend into a double head on one side, wrapped in myosin light chains. This hammer -shaped fiber moves along the muscle fiber, under the tension of adenosine triphosphate (ATP), binds one phosphate to the fiber, pulls out the fiber and then reflects with adenosine diffuse (ADP). The fibers that contain muscles are grouped together like cables, extension and shortening when transforming several types of energy into mechanical power. The forces used depend on the required work; Guiho, adapt to pick up a pencil or suitcase, or maintaint heart beats and lungs constantly breathe. Muscle fiber groups are only accepted if necessary. These fibers act as cables gliding against each other, sometimes a few at once, sometimes many and sometimes sometimes together, depending on the load.

The muscle behaves like a package of cards. When the deck is placed on the table and extends to a long line with a finger, the finger acts like a myosin fiber molecule. The process continues when the card player extends the deck out, lifts the finger and again and again inserts it again, to maximize the allowed deck size and limited card widths. These cycles occur about five times per second and multiply many times in heavy chains of myosin received muscle fibers. Heavy chains of myosin move muscle actions with three Forces types: contraction, hold and controlled relaxation.

There are a number of different types of heavy chains of myosin. For exampleMyosin II consists of two heavy chains and four light chains. All four chains are fastened together in the head; Its long tail consists of two heavy chains that joined the helix. These interact with contractile units of muscle fibers similar to the accordion called myofibrils and saromers.

, along with another protein responsible for the movement of the muscles-actin-myocin chains, connect to disk-shaped discs. If myosin was an umbrella, the actin would be an umbrella rays. Holds two races of handles and opening in opposite directions, all of these elements work to lead to prolonging and shortening muscle fibers.

containing about half of all muscle proteins in the body, when combined with actin, Mycin forms the Actomyosin molecule. Three muscle types: skeletal muscles work; heart or heart muscle; And a smooth muscle like in iris and blood vessels. Polypeptide consisting of about 2,000 amino acids, myosin heavythe strings have an n-terminal or a head domain; a lever neck or n-domain; and c-terminal, which is a tail.

Factors of pre -determining heavy chains of myosin can affect fast and slow responses to twitching. The muscles have limiting factors of their length and elasticity. This affects the power to conclude a contract or spring. However, the individual properties of muscle twitching can be modified or trained for an increased cross -sectional area of ​​muscle and recruiting, as well as for improved athletic performance.