GROUPS OF AMINO ACIDS 1. Aliphatic amino acids 2. Hydroxy amino acids 3. Acidic amino acids 4. Amide amino acids 5. Basic amino acids 6. Sulfur-containing amino acids 7. Aromatic amino acids 8. Secondary amino acidsGROUPS OF AMINO ACIDS 1. Aliphatic amino acids 2. Hydroxy amino acids 3. Acidic amino acids 4. Amide amino acids 5. Basic amino acids 6. Sulfur-containing amino acids 7. Aromatic amino acids 8. Secondary amino acids