Peptide bond

A peptide bond is formed as the result of a dehydration reaction, in which a hydroxyl group (OH) belonging to one amino acid is paired with a hydrogen atom belonging to the amino group of another amino acid, and the two molecules are split away, forming a water molecule.

This process results in a covalent bond between the two remaining molecules; long chains of peptides bonded together and result in polypeptides, which are formed into proteins.