The 20 proteinogenic amino acids

Test
Nonpolar side chains
Gly, G
Glycine
Ala, A
Alanine
Val, V
Valine
Leu, L
Leucine
Ile, I
Isoleucine
Met, M
Methionine
Phe, F
Phenylalanine
Trp, W
Tryptophan
Pro, P
Proline
Polar side chains
Asn, N
Asparagine
Gln, Q
Glutamine
Ser, S
Serine
Thr, T
Threonine
Cys, C
Cysteine
Tyr, Y
Tyrosine
Electrically charged side chains
Asp, D
Aspartic acid
Glu, E
Glutamic acid
Lys, K
Lysine
Arg, R
Arginine
His, H
Histidine