Peptide chain

Biological noun

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Peptide chain is a biological noun, which consists of several amino acid dehydration synthesis formation Peptide bond ( Chemical bond ）Connected.

Two amino Acid connection is Dipeptide , and so on Tripeptide Tetrapeptide...... Less than 10 amino acid composition Scale of Oligopeptide （ Small molecule Peptides), more than ten are polypeptides, and more than fifty are called peptides protein 。 macromolecule Most proteins are long peptide chains that make up more than 100 amino acids. The peptide bond is amino acid α- carboxyl With another adjacent amino acid α- Amino dehydrated condensed covalent bond , so there are free α- Amino or α- Carboxyl group, respectively referred to as Amino terminal or Carboxyl terminal 。 With composition amino acid The nature and function of units vary greatly^[1] 。

Chinese name: Peptide chain
Foreign name: peptide chain

Part of speech: Chemical terminology
Formation: amino acid dehydration synthesis become Peptide bond ( Chemical bond )

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Peptide bond

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Refers to amino acid When connecting to form proteins, each amino The one connected between acids Chemical bond , called Peptide bond 。 In fact, peptide bond is formed by one amino acid when two amino acids are connected carboxyl (- COOH) and another amino acid (- NH two ）Interconnected Chemical bond [-NH-CO-]。

Water molecule

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In two amino acid Connection formation Peptide bond A molecule will be separated (or formed) when water 。 That is, how many peptide bonds are formed, how much molecular water will be released. So how many peptide bonds are contained in a peptide chain, how many water molecules will come out.