Chapter 14, Problem 14E.1BE

Interpretation Introduction

Interpretation:

The isoelectric point of protein has to be stated.

Concept introduction:

Protein contain amino acids as monomers. Amino acid consists of a carboxyl group, amino group and a side chain.  Zwitter ion is formed when the carboxyl group donates a proton to the amino group.  Zwitter ion contains negative and positive charge on the different atoms of a compound. It is a dipolar ion.  The value of $\text{pH}$ at which a zwitter ion exists is known as isoelectric point.  The $\text{pH}$ value affects the net electric charge of a molecule.