Chapter 3, Problem 13PIAT

Summary Introduction

To determine:

The frequency of proline to appear in peptide, if it were made up of a completely random assortment of the 20 most common amino acids

Given:

One of the peptides that can be recovered after gluten digestion is 33 residues long; 13 of the 33 residues are proline.

Introduction:

Gluten proteins are rich in amino acid proline, so they do not break down easily during digestion in small intestine, resulting in short and long peptides. These peptides can be broken down further and absorbed through the intestine and further can be utilized by the body.