Peptides-formed by amino acids
Generally, the number of amino acids contained in a peptide is two to nine. According to the number of amino acids in a peptide, the peptide has many different names: a compound formed by the dehydration and condensation of two amino acid molecules is called a dipeptide. Peptides, tetrapeptides, pentapeptides, etc., up to nonapeptide. Compounds usually formed by dehydrating and condensing 10 to 100 amino acid molecules are called polypeptides. Their molecular weight is lower than 10,000 Da (Dalton, [...]