Answer. The amino acids link through peptide linkage. Peptide linkage (bond) is formed by the elimination of water molecule between j the amino group of one amino acid and carboxyl acid group of another amino acid. Such as:
H2N-CH-COOH + HNH-CH-COOH H20 H2N - CH-C — NH- -CH-COOH |
R R R R
(Dehydration) Peptide linkage