Chapter 22, Problem 6E

Interpretation Introduction

Interpretation:

The name of the tetrapeptides abbreviated as $\text{S-F-G-Y}$ and $\text{Y-F-G-S}$ is to be stated in words. The N-terminal amino acid in each tetrapeptide is to be stated.

Concept introduction:

The amino acids are the building blocks of protein molecules. The amino acid contains amino group $\left(-{\text{NH}}_{\text{2}}\right)$, a carboxylic acid group $\left(-\text{COOH}\right)$ and side chain $\left(-\text{R}\right)$. When proteins are broken down, amino acids are produced.