Alanine (Ala)
Arginine (Arg)
Aspartic acid (Asp)
Cystine
Glutamic acid (Glu)
Glutamine (Gln)
Glycine (Gly)
Histidine (His)
Isoleucine (Ile)
Leucine (Leu)
Lysine (Lys)
Methionine (Met)
Ornithine
Phenylalanine (Phe)
Proline (Pro)
Serine (Ser)
taurine
Threonine (Thr)
Tyrosine (Tyr)
Valine (Val)