Chapter 19, Problem 19.25P

Interpretation Introduction

Interpretation: The isoelectric point of phenylalanine is to be identified. The structure of phenylalanine at its isoelectric point is to be drawn.

Concept introduction: Phenylalanine is the amino acid having molecular formula ${\text{C}}_{\text{9}}{\text{H}}_{\text{11}}{\text{NO}}_{\text{2}}$. The amino acids are the functional unit of proteins. The different amino acids combine to formwide range of proteins. Protein is required to maintain various activities and chemical reactions in the body. There are $20$ amino acids found in nature.