Amino acids and peptide bond formation

The carboxyl group (COO) of one amino acid reacts with the amino group (+H3N) of the adjacent amino acid to form a covalent peptide bond that links amino acids in a polypeptide chain. Amino acids contain a central carbon (the -carbon) and an R-group, here identified as R1 and R2The carboxyl group (COO) of one amino acid reacts with the amino group (+H3N) of the adjacent amino acid to form a covalent peptide bond that links amino acids in a polypeptide chain. Amino acids contain a central carbon (the -carbon) and an R-group, here identified as R1 and R2

Carboxyl Amino group group H H H Peptide bond H | | | //0 formation | H3N+—C + H—-N+—C—C\ —> H3N+—C A r A 0- RI 1 2 - 1 a-carbon\ a carbon R groups