What is a peptide?

1. the composition of the human body

In addition to the nature of all living things other than viruses, are the cells. We all know that the human body is about 60 trillion cells organized. If all of them arranged in a straight line, its length about 400 million km, which is equivalent to the distance to the moon 10 times. What constitutes a cell is it? If you remove the water in the cells, most of the rest of the protein, the protein composition of the human body is the most important material. Protein to the body weight of about 20%, 50% dry matter. In addition to bile, urine outside the body are made of protein synthesis, including muscle, bone, blood, nerve, skin, hair and all body organs. If the human body as a building, This building is the brick cells, and protein is the main brick building material.

2. the protein composition

Variant proteins provided in the food into the human body can not be directly used by the body to be broken down into 20 amino acids the body needs (amino acid), it may re-form into the body's own proteins. Past medical profession that constitutes a protein amino acid directly, but through the study found that the protein composition of amino acids can not directly, but must be combined with each other to form peptide chains, then the peptide chain through the formation of protein folding twisting.

3. the composition of peptides

Peptide is between amino acids and proteins on the material, is composed of two or more amino acids linked by peptide bonds conjugates. Although the body can absorb and use only 20 kinds of amino acids; however, a different number of different types of amino acids, through the permutations and combinations you can build hundreds of peptides. As simple wood, paint, nail shape can produce thousands of furniture.

Peptides constitute the basic material of all cells the body, the body of the active substances are in the form of peptides, peptide is the body's complex physiological activity to complete essential participants. There are hundreds of kinds of peptides in the human body, especially the most abundant brain peptides, peptide involved in all areas of the body, including hormonal, nervous, reproductive and cell renewal, metabolism, growth, repair. Its importance lies in the systems regulating the body's physiological function of organs and cells, activation of relevant enzymes in vivo is an important physiological modulators, it's cell activity, functional activity, for life is very important. So the existence of life in the form of peptide, no peptide, life is not possible to live.


Protein, peptide, oligopeptide distinguish

Protein: molecular weight> 5000, from ≥ 51 amino acids linked by peptide bonds consisting of organic polymers.

Peptides: molecular weight between 1000 to 5000, the number of peptide bonds between amino acids 11-50 a link between.

Oligopeptides: molecular weight <1000, the number of peptide bonds between amino acids link between 2-10 months.