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By studying protein development process, it can be concluded that protein is the most important substance in the body. Without protein, there would be no life. Human organs and tissues are composed of cells, and protein is the main component of all cells. Either intracellular protein or peripheral proteins have their own effects. Children need it to form muscles, blood, bones, nerves, hair, etc. Adults need it to renew tissues and repair damaged and aging bodies. Therefore, protein is the main material basis for the continuation of human life, so it is called the carrier of life. Proteins are composed of more than 20 amino acids in different amounts and sequences. There are more than 10,000 kinds of proteins in the human body. Small protein molecules composed of hundreds of amino acids can form creative peptides, while large ones are composed of tens of thousands of amino acids.

The functions of proteins include:

(1) make and repair human tissues. Every tissue of the human body, from skin, hair and muscles to internal organs, brain, blood and bones, is mainly composed of protein. Tissue repair after trauma also requires a lot of protein.

(2) the main materials of enzymes and hormones, all kinds of chemical reactions in human body, are almost entirely catalyzed by enzymes. Thousands of enzymes have been discovered, all of which are made from proteins. In the human body plays a regulatory role in a variety of hormones, such as growth hormone, insulin, etc., is also made of protein as the main raw material.

(3) constitute antibodies. When the human body is attacked by external bacteria and viruses, the body can produce a corresponding antibody to eliminate the invaders’ harm to the human body. This antibody is various immunoglobulin. Therefore, protein is an essential nutrient for cell membrane isolation to maintain the normal immune function of human body.

(4) regulate the balance of body fluids. The blood and tissues of human body often exchange water, but can maintain the balance between each other, which is maintained by electrolyte concentration and plasma protein concentration. If there is a lack of protein in the diet, the plasma protein content will drop, so that the osmotic pressure of blood is lower than the tissue fluid, resulting in excessive infiltration of blood water into the surrounding tissue edema.

(5) transport all kinds of substances, which are transported to various systems of the human body through the blood circulation. The carrier is also protein. If hemoglobin carries oxygen, ferritin carries iron. Therefore, protein is also called the captain of transportation in human body.

(6) to maintain the normal function of the nervous system, nearly half of the brain’s dry weight is protein. Lack of protein during brain development can affect the number of brain cells and thus affect intellectual development. Some sensory proteins, such as taste proteins on the taste buds and visual pigments in the retina, are made of proteins.

Plasma membrane proteins are the state of substance in an organism, and the plasma produced in the laboratory depends on gas discharge. Therefore, industrial applications and household plasmas are produced by ionized gases, such as glow discharge, arc discharge and rf discharge. Laboratory plasma can be produced under low pressure and atmospheric pressure, the use is not the same, can be used as light source, ion source, electron beam source, as well as semiconductor etching, coating, deposition, cleaning and other USES of plasma source. Natural plasmas like lightning, auroras, the sun is also a sphere of fusion plasma. Commonly used in plasma ionization produced gas is inert gas, alkali metal steam, nitrogen, water vapor, electronegative gas such as oxygen, sulfur tetrafluoride, mixed gases such as air, helium – air, nitrogen, argon, etc., plasma protein membrane is an important component of protein coordination to function correctly is of great significance.

The realization of protein function is also closely related to the synaptic vesicles, giant unilamellar vesicles in chemical transfer synapses, which are many vesicles about 50 filaments in diameter. The synaptic vesicles of motor nerve endings are spherical. In the sympathetic nerve endings, there are some synaptic vesicles with a diameter of about 100 fiber-meters and a dark core. In addition to these two types in the central nervous system, there are also synaptic vesicles with rotating elliptic shape. The vesicles contain high concentrations of chemical transporters, which are released into the synaptic gap as the nerve endings become excited. Neurotransmitters are transported from presynaptic membrane to postsynaptic membrane in a way of exocytosis, which reflects the fluidity of cell membrane. Presynaptic membrane is a layer of membrane, axon is a part of neuron, and neuron is the main component of nerve cells, while single-membrane vesicles are the necessary carrier of protein function.