Protein Structure. Over 50% of the body’s dry mass is protein; proteins are the most important organic molecule in the body. The building blocks of proteins are amino acids. 26 amino acids exist in nature; humans require 20 to make the proteins we need.
All amino acids contain an amino group and a
Carboxylic acid group; these functional groups are
“sticky,” that is, they are charged and can form bonds with
Here are the structures
of the 20 amino
acids needed by the
body; Note the pink
are the same amongst
all of the acids; these
are the carboxylic
acid and amino groups.
Protein denaturature egg whites
Casein protein is an Emulsifier, that is, the casein molecule contains both a polar (charged) section and a nonpolar (uncharged) section making the casein molecule both hydrophillic and hydrophobic.