Chemistry
Biology

What makes one amino acid different from another?

Answer

Wiki User
09/11/2014

Amino acids carry two functional groups: an amine group (-NH2) and a carboxylic acid group (-COOH). They are different because they have different side chains (R groups) attached to an alpha carbon that is specific to each amino acid.

Key elements in the 500 amino acids are carbon, hydrogen, oxygen, and nitrogen, but other elements can be found in the side chains of certain amino acids.