Glutamic acid has a carboxylic acid (COO-) group on the gamma carbon of the amino acid. The carboxylic acid group carries a negative charge and is considered acidic. Lysine has a amino group (NH3+)...
They are acids because they are electron donors in a chemical bonding. The "amino" part of the name stems from the fact that they all have an amine group ( -NH2 ) at one end.Amino acids are called...