| Amino acids | Symbols | Codons | 
| Alanine | Ala | A | GCA, GCC, GCG, GCU | 
| Cysteine | Cys | C | UGC, UGU | 
| Aspartic acid | Asp | D | GAC, GAU | 
| Glutamic acid | Glu | E | GAA, GAG | 
| Phenylalanine | Phe | F | UUC, UUU | 
| Glycine | Gly | G | GGA, GGC, GGG, GGU | 
| Histidine | His | H | CAC, CAU | 
| Isoleucine | Ile | I | AUA, AUC, AUU | 
| Lysine | Lys | K | AAA, AAG | 
| Leucine | Leu | L | UUA, UUG, CUA, CUC, CUG, 
CUU | 
| Methionine | Met | M | AUG | 
| Asparagine | Asn | N | AAC, AAU | 
| Proline | Pro | P | CCA, CCC, CCG, CCU | 
| Glutamine | Gln | Q | CAA, CAG | 
| Arginine | Arg | R | AGA, AGG, CGA, CGC, CGG, 
CGU | 
| Serine | Ser | S | AGC, AGU, UCA, UCC, UCG, 
UCU | 
| Threonine | Thr | T | ACA, ACC, ACG, ACU | 
| Valine | Val | V | GUA, GUC, GUG, GUU | 
| Tryptophan | Trp | W | UGG | 
| Tyrosine | Tyr | Y | UAC UAU |