The Concept Of Peptides

The amino group of one amino acid can be condensed with the carboxyl group of another amino acid to form a peptide, and the amide group formed is called a peptide bond in protein chemistry. Amino acid molecules are the smallest, while proteins are the largest. Two or more amino acids undergo dehydration and condensation to form several peptide bonds, forming a peptide chain. Multiple peptide chains undergo multi-level folding to form a protein molecule. Proteins are sometimes referred to as "peptides". Dipeptides, also known as dipeptides, are protein fragments composed of two amino acids.
concept
1, An organic compound formed by dehydration of amino acids, containing carboxyl and amino groups, and is a amphoteric compound. Also known as "peptide".
2, One of the amides. It is formed by the combination of two or more amino acids through the amino group of one amino acid and the carboxyl group of another amino acid. An amino acid cannot be called a peptide, nor can it be synthesized into a peptide. It must be a compound in which two or more amino acids are connected by peptide bonds. A compound in which two amino acids are connected by peptide bonds is called a dipeptide; A compound consisting of three amino acids connected by peptide bonds is called a tripeptide, and so on. A compound consisting of thirty-four amino acids connected by peptide bonds is called a thirty fourth peptide.
3, It is a bioactive substance that involves multiple cellular functions within an organism. Hundreds of peptides have been discovered in living organisms, which are essential participants in completing various complex physiological activities. All cells are capable of synthesizing peptide substances, and their functional activities are also regulated by peptides. It involves various fields such as hormones, nerves, cell growth, and reproduction, and its importance lies in regulating various system organs and cells in the body. The physiological and pharmacological effects of enzymatic peptides are mainly to activate the relevant enzyme systems in the body, promote the permeability of intermediate metabolic membranes, or affect specific protein synthesis by controlling DNA transcription or translation, ultimately producing specific physiological effects or exerting their pharmacological effects. Peptides are superior to amino acids, firstly because they absorb more quickly than amino acids; Secondly, it is absorbed by the body in its complete form; The third is active absorption (amino acids belong to passive absorption); The fourth is low consumption. Compared with amino acids, peptide absorption has the characteristics of low consumption or no energy consumption. After being absorbed through the duodenum, peptides directly enter the bloodstream and deliver their own energy and nutrients to various parts of the human body; The fifth is that peptides absorb more amino acids and have unsaturated characteristics; There are only 20 types of amino acids with countable functions, while peptides can synthesize hundreds or thousands of types using amino acids as substrates. Shengpeptide is a small molecule collagen protein that is degraded and contains amino acid groups. It belongs to the category of raw material products. Peptides are also inherent components in the human body, forming a chain like structure of amino acids. The protein we are familiar with is a type of polypeptide chain. Different peptides are formed due to the varying composition and sequence of amino acids. A compound composed of two amino acids connected by peptide bonds is called a "dipeptide", and so on. A compound composed of nine amino acids is called a "nine peptide". A peptide composed of multiple amino acids (usually 50 or 100) is called a polypeptide, and the amino acid units that make up the polypeptide are called amino acid residues. Peptide bonds connect amino acids to their head and tail.