Aspartic acid
Asp (D), negative
Glutamic acid
Glu (E), negative
Arginine
Arg (R), positive
Lysine
Lys (K), positive [essential amino acid]
Histidine
His (H), positive [essential amino acid]
Asparagine
Asn (N), uncharged polar
Glutamine
Gln (Q), uncharged polar
Serine
Ser (S), uncharged polar
Threonine
Thr (T), uncharged polar [essential amino acid]
Tyrosine
Tyr (Y), uncharged polar
Alanine
Ala (A), nonpolar
Glycine
Gly (G), nonpolar
Valine
Val (V), nonpolar [essential amino acid]
Leucine
Leu (L), nonpolar [essential amino acid]
Isoleucine
Ile (I), nonpolar [essential amino acid]
Proline
Pro (P), nonpolar
Phenylalanine
Phe (F), nonpolar [essential amino acid]
Methionine
Met (M), nonpolar [essential amino acid]
Tryptophan
Trp (W), nonpolar [essential amino acid]
Cysteine
Cys (C), nonpolar