Codon Usage Tables
E. coli
| Triplet | AA | Fraction |
|---|
| TTT | F | 0.58 |
| TTC | F | 0.42 |
| TTA | L | 0.14 |
| TTG | L | 0.13 |
| TAT | Y | 0.59 |
| TAC | Y | 0.41 |
| TAA | * | 0.61 |
| TAG | * | 0.09 |
| CTT | L | 0.12 |
| CTC | L | 0.10 |
| CTA | L | 0.04 |
| CTG | L | 0.47 |
| CAT | H | 0.57 |
| CAC | H | 0.43 |
| CAA | Q | 0.34 |
| CAG | Q | 0.66 |
| ATT | I | 0.49 |
| ATC | I | 0.39 |
| ATA | I | 0.11 |
| ATG | M | 1.00 |
| AAT | N | 0.49 |
| AAC | N | 0.51 |
| AAA | K | 0.74 |
| AAG | K | 0.26 |
| GTT | V | 0.28 |
| GTC | V | 0.20 |
| GTA | V | 0.17 |
| GTG | V | 0.35 |
| GAT | D | 0.63 |
| GAC | D | 0.37 |
| GAA | E | 0.68 |
| GAG | E | 0.32 |
| TCT | S | 0.17 |
| TCC | S | 0.15 |
| TCA | S | 0.14 |
| TCG | S | 0.14 |
| TGT | C | 0.46 |
| TGC | C | 0.54 |
| TGA | * | 0.30 |
| TGG | W | 1.00 |
| CCT | P | 0.18 |
| CCC | P | 0.13 |
| CCA | P | 0.20 |
| CCG | P | 0.49 |
| CGT | R | 0.36 |
| CGC | R | 0.36 |
| CGA | R | 0.07 |
| CGG | R | 0.11 |
| ACT | T | 0.19 |
| ACC | T | 0.40 |
| ACA | T | 0.17 |
| ACG | T | 0.25 |
| AGT | S | 0.16 |
| AGC | S | 0.25 |
| AGA | R | 0.07 |
| AGG | R | 0.04 |
| GCT | A | 0.18 |
| GCC | A | 0.26 |
| GCA | A | 0.23 |
| GCG | A | 0.33 |
| GGT | G | 0.35 |
| GGC | G | 0.37 |
| GGA | G | 0.13 |
| GGG | G | 0.15 |
S. cerevisiae
| Triplet | AA | Fraction |
|---|
| TTT | F | 0.59 |
| TTC | F | 0.41 |
| TTA | L | 0.28 |
| TTG | L | 0.29 |
| TAT | Y | 0.56 |
| TAC | Y | 0.44 |
| TAA | * | 0.48 |
| TAG | * | 0.24 |
| CTT | L | 0.13 |
| CTC | L | 0.06 |
| CTA | L | 0.14 |
| CTG | L | 0.11 |
| CAT | H | 0.64 |
| CAC | H | 0.36 |
| CAA | Q | 0.69 |
| CAG | Q | 0.31 |
| ATT | I | 0.46 |
| ATC | I | 0.26 |
| ATA | I | 0.27 |
| ATG | M | 1.00 |
| AAT | N | 0.59 |
| AAC | N | 0.41 |
| AAA | K | 0.58 |
| AAG | K | 0.42 |
| GTT | V | 0.39 |
| GTC | V | 0.21 |
| GTA | V | 0.21 |
| GTG | V | 0.19 |
| GAT | D | 0.65 |
| GAC | D | 0.35 |
| GAA | E | 0.71 |
| GAG | E | 0.29 |
| TCT | S | 0.26 |
| TCC | S | 0.16 |
| TCA | S | 0.21 |
| TCG | S | 0.10 |
| TGT | C | 0.63 |
| TGC | C | 0.37 |
| TGA | * | 0.29 |
| TGG | W | 1.00 |
| CCT | P | 0.31 |
| CCC | P | 0.15 |
| CCA | P | 0.41 |
| CCG | P | 0.12 |
| CGT | R | 0.15 |
| CGC | R | 0.06 |
| CGA | R | 0.07 |
| CGG | R | 0.04 |
| ACT | T | 0.35 |
| ACC | T | 0.22 |
| ACA | T | 0.30 |
| ACG | T | 0.13 |
| AGT | S | 0.16 |
| AGC | S | 0.11 |
| AGA | R | 0.48 |
| AGG | R | 0.21 |
| GCT | A | 0.38 |
| GCC | A | 0.22 |
| GCA | A | 0.29 |
| GCG | A | 0.11 |
| GGT | G | 0.47 |
| GGC | G | 0.19 |
| GGA | G | 0.22 |
| GGG | G | 0.12 |
Homo sapiens
| Triplet | AA | Fraction |
|---|
| TTT | F | 0.45 |
| TTC | F | 0.55 |
| TTA | L | 0.07 |
| TTG | L | 0.13 |
| TAT | Y | 0.43 |
| TAC | Y | 0.57 |
| TAA | * | 0.28 |
| TAG | * | 0.20 |
| CTT | L | 0.13 |
| CTC | L | 0.20 |
| CTA | L | 0.07 |
| CTG | L | 0.41 |
| CAT | H | 0.41 |
| CAC | H | 0.59 |
| CAA | Q | 0.25 |
| CAG | Q | 0.75 |
| ATT | I | 0.36 |
| ATC | I | 0.48 |
| ATA | I | 0.16 |
| ATG | M | 1.00 |
| AAT | N | 0.46 |
| AAC | N | 0.54 |
| AAA | K | 0.42 |
| AAG | K | 0.58 |
| GTT | V | 0.18 |
| GTC | V | 0.24 |
| GTA | V | 0.11 |
| GTG | V | 0.47 |
| GAT | D | 0.46 |
| GAC | D | 0.54 |
| GAA | E | 0.42 |
| GAG | E | 0.58 |
| TCT | S | 0.18 |
| TCC | S | 0.22 |
| TCA | S | 0.15 |
| TCG | S | 0.06 |
| TGT | C | 0.45 |
| TGC | C | 0.55 |
| TGA | * | 0.52 |
| TGG | W | 1.00 |
| CCT | P | 0.28 |
| CCC | P | 0.33 |
| CCA | P | 0.27 |
| CCG | P | 0.11 |
| CGT | R | 0.08 |
| CGC | R | 0.19 |
| CGA | R | 0.11 |
| CGG | R | 0.21 |
| ACT | T | 0.24 |
| ACC | T | 0.36 |
| ACA | T | 0.28 |
| ACG | T | 0.12 |
| AGT | S | 0.15 |
| AGC | S | 0.24 |
| AGA | R | 0.20 |
| AGG | R | 0.20 |
| GCT | A | 0.26 |
| GCC | A | 0.40 |
| GCA | A | 0.23 |
| GCG | A | 0.11 |
| GGT | G | 0.16 |
| GGC | G | 0.34 |
| GGA | G | 0.25 |
| GGG | G | 0.25 |