| amino acid | three letter code | single letter code | 
| glycine | Gly | G | 
| alanine | Ala | A | 
| valine | Val | V | 
| leucine | Leu | L | 
| isoleucine | Ile | I | 
| methionine | Met | M | 
| phenylalanine | Phe | F | 
| tryptophan | Trp | W | 
| proline | Pro | P | 
| serine | Ser | S | 
| threonine | Thr | T | 
| cysteine | Cys | C | 
| tyrosine | Tyr | Y | 
| asparagine | Asn | N | 
| glutamine | Gln | Q | 
| aspartic acid | Asp | D | 
| glutamic acid | Glu | E | 
| lysine | Lys | K | 
| arginine | Arg | R | 
| histidine | His | H | 
	
		Yellow amino acids contain sulfur.
		Blue amino acids can be phosphorylated
		.
	
| glycine | alanine | valine | leucine | 
|  |  |  |  | 
|  |  |  |  | 
| isoleucine | methionine | phenylalanine | 
|  |  |  | 
|  |  |  | 
| tryptophan | proline | 
|  |  | 
|  |  | 
| serine | threonine | cysteine | 
|  |  |  | 
|  |  |  | 
| tyrosine | asparagine | glutamine | 
|  |  |  | 
|  |  |  | 
| aspartic 
                  acid  | glutamic 
                  acid  | 
|  |  | 
|  |  | 
| lysine | arginine | histidine | 
|  |  |  | 
|  |  |  |