What is a peptide peptide?
It is a compound in which α-amino acids are linked together by peptide bonds, and it is also an intermediate product of protein hydrolysis.
Peptide discrimination Generally, the number of amino acids contained in a peptide is two to nine. According to the number of amino acids in the peptide, the peptide has various different names: a compound obtained by dehydration condensation of two amino acid molecules is called a dipeptide, and the same reason. There are also tripeptides, tetrapeptides, pentapeptides, etc., up to the nonapeptide. Compounds usually dehydrated and condensed from 10 to 100 amino acid molecules are called polypeptides. Their molecular weights are less than 10,000 Da (dalton, Dalton), and they can pass through a semipermeable membrane and cannot be precipitated by trichloroacetic acid and ammonium sulfate. There are also literatures that refer to peptides consisting of 2 to 10 amino acids as oligopeptides; peptides of 10 to 50 amino acids are called peptides; peptides composed of more than 50 amino acids are called proteins. In other words, proteins are sometimes referred to as polypeptides.
The -NH2 and -COOH of a plurality of molecules α-amino acids are condensed with each other to form a long-chain compound having 10 or more peptide bonds (-CONH-). It includes a variety of compounds with physiological activity in biological organisms that can be extracted from animal tissues or artificially synthesized. Protein is a long-chain peptide formed by peptide bonds in a certain order with various amino acids. It is a polymer compound formed by cross-linking of various secondary bonds. The protein has a complex four-stage structure and is broken by different degrees of hydrolysis. The structure can obtain a multi-stage product including a polypeptide, a protein, a proteose, a peptone, a polypeptide, an oligopeptide, and an amino acid. This also indicates the pathway of protein synthesis. Therefore, synthetic peptides can be used not only in the biochemical pharmaceutical industry, but also to elucidate the pathways and structures of proteins.
The wrist can be said to be a very important but fragile joint in our body, but many people do not pay attention to the protection of the wrist in daily training.
If we want to protect our wrists during training, we need to use wrist protectors. Wearing wrist protectors correctly can protect us from the risk of injury during training. For example, if the weight of the bench press is too large, it will cause excessive back pressure of the palm, which will easily lead to arthritis and other problems in the long run. The use of wrist protectors will actually help the wrist to reduce this force, To protect your wrist.
There is also a standard to determine whether the wrist guard is correctly worn. It is to see whether your hand can move freely as normal after wearing the wrist guard. Generally speaking, after correctly wearing the wrist guard, the flexibility of the wrist will be reduced, so as to better protect the wrist.
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