protein - it is a chemical that is an organic compound of a high type.As part of the protein, there are over a hundred different amino acid residues.Each person in his body must contain at least fifteen kilograms of protein.
Proteins can be of several types:
1. Proteins simple peptide type.They consist of no more than one hundred amino acid residues.
2. Proteins oligopeptide type.They include two to ten amino acid residues in the chain.
3. Protein polypeptide type.They include from ten to one hundred amino acid residues in the chain.
also need to say that the proteins may be in one of four forms of organization:
1. This is the primary form of the protein.In this form, the protein contains a linear molecule, which consists of a sequence of amino acid residues.
2. This is a secondary form of the protein.In this form of the protein is changed in the space, it forms a kind of spiral attached by hydrogen bonds.
3. It tertiary form of the protein.In this form, with a variety of connections spiral protein molecule bends and folds in some globular structure, which in chemistry called globule.
4. This quaternary form of the protein.In this case, several protein molecules in the form of globules fixed to each other by means of links.
When the protein there is any external influence, for example, the impact of factors such as fever, a protein molecule begins to collapse gradually, form the shape.But when, at last, is the destruction of the primary structure of the protein, it is said that there was a protein hydrolysis.Hydrolysis of proteins - a process peculiar failure of the primary form of the protein molecule.This complex process can proceed in an acid medium and in alkaline medium type.The mandatory part of such a natural process, as the hydrolysis of proteins in the body, is an enzyme - peptidase - hydrolase.The hydrolysis of proteins - this is the last stage of destruction of the protein molecule type.Destruction of secondary or higher forms of the molecule called denaturation.Denaturation can occur in a reversible and irreversible version.Reversible denaturation occurs in the destruction of the weak links in the protein molecule, and irreversible - in violation of the complex of strong covalent bonds.
This is important in our life products like milk, too, it consists mostly of protein.Its protein comprises three main components:
1. The protein casein.It is found in milk of about three percent.
2. Laktobulmin.It is similar in composition to the protein contained in serum.It is found in milk of about half a percent.
3. Lactoglobulin.This protein is very useful for immunity.It has antibiotic and immune forces.
protein in milk can only be in a soluble state, and it is absorbed in the use of it in food for ninety-eight percent.It plays an important role in the body, used it as a feed.Its main purpose - is to participate in the formation of new cells, especially in young organisms, plants and animals, as well as it helps to restore the old cells.
in milk, including, may contain a certain amount of whey protein origin or similar origin.Such proteins enter the milk from the mammary gland cells and in fact, are waste products of the body, which is taken from the product.Also, milk protein contains the most essential amino acid residues that can not be synthesized in the body, but in any case necessary for the existence and its subsequent activity.
