Chapter

Defining Protein

From Human Nutrition by Human Nutrition

Concepts

1. Protein Basics

   "Image by Allison Calabrese / CC BY 4.0 Defining Protein Protein makes up approximately 20 percent of the human body and is present in every single cell. The word protein is a Greek word, meaning “of

2. Amino Groups

   "Amino acids are classified into four groups. These are nonpolar, polar, acidic, and basic. It’s All in the Side Chain The side chain of an amino acid, sometimes called the “R” group, can be as simple

3. Protein Formation

   "The Many Different Types of Proteins As discussed, there are over one hundred thousand different proteins in the human body. Different proteins are produced because there are twenty types of naturall

4. Protein Structure

   "Protein Organization Protein’s structure enables it to perform a variety of functions. Proteins are similar to carbohydrates and lipids in that they are polymers of simple repeating units; however, p