- Val valine, Leu leucine, Ile isoleucine, Phe phenylalanine, Trp tryptophan, Met methionine, Thr threonine, Lys lysine, Asp asparate, Ala alanine, Tyr tyrosine, Glu glutamate, Pro proline, Arg arginine, Orn ornithine, Ser serine, Gly glycine, Asn asparagine, aABA α-aminobutyric acid