Serine
S
Threonine
T
Tryptophan
W
Tyrosine
Y
Valine
V
Selenocysteine
U
Pyrrolysine
O
Polarity of side chain
Alanine
Neutral
Arginine
Basic
Asparagine
Neutral
Aspartic acid
Acidic
Cysteine
Neutral
Glutamine
Neutral
Glutamic acid
Acidic
Glycine
Neutral
Histidine
Basic
Isoleucine
Neutral
Leucine
Neutral
Methionine
Neutral
Lysine
Basic