Experts explain small peptide

The amino group of one amino acid and the carboxyl group of another amino acid can be condensed into peptide, and the amide group formed is called peptide bond in protein chemistry Amino acids are the smallest molecules Proteins are formed by dehydration and condensation of two or more amino acids to form a number of peptide bonds Multiple peptides are folded to form a protein molecule Proteins are sometimes referred to as "peptides." Dipeptides are protein fragments composed of two amino acids Peptide is a kind of organic compound, which is dehydrated from amino acid and contains carboxyl and amino group It is an amphoteric compound Peptide is one of amides It is composed of two or more amino acids through the amino acid 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 It must be a compound with two or more amino acids connected by peptide bonds The compound with two amino acids linked by peptide bond is called dipeptide; the compound with three amino acids linked by peptide bond is called tripeptide, and so on The compound with 34 amino acids linked by peptide bond is called 34 peptide Peptide is a kind of bioactive substance related to many cell functions in organism Up to September 2003, hundreds of peptides have been found in the organism, which are essential participants for the organism to complete various complex physiological activities All cells can synthesize polypeptides, and their functional activities are also regulated by polypeptides It involves hormone, nerve, cell growth and reproduction, and its importance lies in regulating the organs and cells of various systems in the body The physiological and pharmacological functions of enzymatic peptides are mainly to activate the related enzymes in vivo, promote the permeability of the intermediate metabolism membrane, or affect the specific protein synthesis by controlling DNA transcription or translation, and finally produce specific physiological effects or play their pharmacological roles Peptide is better than amino acid, one is faster than amino acid absorption; the other is absorbed by the body in a complete form; the third is active absorption (amino acid belongs to passive absorption); the fourth is low consumption, compared with amino acid, peptide absorption has the characteristics of low consumption or no consumption of energy, after the peptide is absorbed through the duodenum, it directly enters the blood circulation, and transports its energy nutrition to all parts of the body; The fifth is that peptides absorb more amino acids and have the characteristics of unsaturated; the sixth is that there are only 20 kinds of amino acids with countable functions, while peptides can synthesize hundreds of thousands of them with amino acids as the substrate Peptide is a kind of degraded small molecule collagen, containing amino acid group, which belongs to raw material products Peptide is also an original component in human body, which is a chain structure formed by amino acids The protein we are familiar with is a polypeptide chain Different peptides are formed due to different components and sequences of amino acids A compound consisting of two amino acids linked by peptide bonds is called "dipeptides", and so on A compound consisting of nine amino acids is called "nine peptides", a peptide consisting of multiple amino acids (generally 50 or 100) is called polypeptides, and an amino acid unit consisting of polypeptides is called "amino acid residues" Peptide bonds connect amino acids to the head and tail of amino acids.