AROMATIC AMINO ACIDS BASIC AMINO ACIDS OH H CH2 CH HN-C-COO C-C00 HN-C-COO- HN-C-COO- HN-C-COO H.N-C-COO H H H Phenylalanine(Phe)F Tyrosine(Tyr)Y Tryptophan (Trp)W Histidine (His)H Lysine (Lys)K Arginine (Arg)R ACIDIC AMINO ACIDS AND THEIR AMIDES Ch. HN-C-COO H,N-C-COO- HN-C-C00 HN-C-COO- H H H Aspartic acid (Asp)D Glutamic acid (Glu)E Asparagine (Asn)N Glutamine(GIn)O