Question

Draw the structure of each peptide. Label the N-terminal and C-terminal amino acids and all amide bonds.

a. Val–Glu

b. Gly–His–Leu

c. M–A–T–T

Short answer

c.

Step-by-step solution

Peptide

When amino acid binds together by amide bonds, a large molecule is formed called peptide. Peptides are used as dietary supplements, to stimulate skin, and provide proteins required to the skin.

N-terminal and C-terminal

N-terminal amino acid are those amino acid which are free from amine group and C-terminal amino acid are those which are free from carboxyl group. N-terminal amino acid is written on the left end of the chain and C-terminal amino acid on the right.

Structures

a. The structure of Val-Glu peptide is drawn by joining adjacent and groups in amide bonds.

b. The structure of Gly-His-Leupeptide is drawn by joining adjacent and groups in amide bonds.

c. The structure of M-A-T-T peptide is drawn by joining adjacent and groups in amide bonds.