This is Glycine the
simplest Amino Acid. It
has two hydrogens attached to its central carbon. Is is the only Amino Acid that
does not have stereo isomers. On one end is an Amine group, consisting of a
nitrogen (in blue) and two hydrogens (yellow). On the other end is a Carboxyl
group. Carboxyl groups are characterized by a carbon attached double bonded to a
oxygen and single bonded to a hydroxyl group. The Caboxyl group releases
hydrogens and therefore is acidic.