Question

For the tetra peptide Asp–Arg–Val–Tyr:

a. Name the peptide using one-letter abbreviations.

b. Draw the structure.

c. Label all amide bonds.

d. Label the N-terminal and C-terminal amino acids

Short answer

a.D-R-V-Y

b.

c.

d.

Step-by-step solution

Tetra peptide

Peptides with four amino acids linked by peptide bonds are said to be tetra peptide.The structure of tetra peptide can be linear as well as cyclic.

Abbreviation

a. The one-letter abbreviation of Asp-Arg-Val-Tyr is D-R-V-Y.

Structure

b. The structure of Asp-Arg-Val-Tyr.

Structure of Asp-Arg-Val-Tyr

Amide bonds

c. The bond that forms between amino acid and carboxyl group of other amino acid is said to be amide bonds.

Labeling of amide bonds

N-terminal and C-terminal

d. N-terminal and C-terminal are those amino acids that are free from the amine and carboxyl group. They are always located at the left and right end of the chain respectively.

Labeling of N-terminal and C-terminal amino acid