Question

Draw the structure for each peptide:

(a) Phe–Ala;

(b) Gly–Gln;

(c) Lys–Gly;

(d) R-H

Short answer

a.

b.

C.

d.

Step-by-step solution

Peptide

Peptides are short chains of amino acid monomers linked with the peptide bonds. The shortest peptide are said to be di-peptides consisting of 2 amino acids linked by single peptide bond as followed by tri-peptide, tetra-peptide, and so on.

Structures of peptides

Phe-Ala, Gly-Gln, Lys-Gly, and R-H are dipeptide which has 2 amino acids with same/different constituent.

(a) Phe-Ala

Structure of Phe-Ala

(b) Gly-Gln

Structure of Gly-Gln

(c) Lys-Gly

Structure of Lys-Gly

(d) R-H

Structure of R-H