Amino Acids

Nonpolar, aliphatic

Glycine
Alanine
Proline
Valine
Leucine
Isoleucine
Methionine

Aromatic

Phenylalanine 

Tyrosine 

Tryptophan

Polar, uncharged

Serine 

Threonine 

Cysteine

Asparagine 

Glutamine

Positively charged

Lysine

Histidine

Arginine

Negatively charged

Aspartate 

Glutamate