|  | Second Position of Codon |  |  | |||
---|---|---|---|---|---|---|---|
 |  | U | C | A | G |  |  |
First Position of Codon | U | UUU [F] 608 | UCU [S] 123 | UAU [Y] 312 | UGU [C] 123 | U | Third Position of Codon |
 |  | UUC [F] 126• | UCC [S] 18 | UAC [Y] 69• | UGC [C] 20• | C |  |
 |  | UUA [L] 688• | UCA [S] 205• | UAA [stop] 32 | UGA [stop] 2 | A |  |
 |  | UUG [L] 163 | UCG [S] 57 | UAG [stop] 3 | UGG [W] 120• | G |  |
 | C | CUU [L] 179 | CCU [P] 139 | CAU [H] 140 | CGU [R] 83 | U |  |
 |  | CUC [L] 38• | CCC [P] 18 | CAC [H] 30• | CGC [R] 17• | C |  |
 |  | CUA [L] 88• | CCA [P] 115• | CAA [Q] 217• | CGA [R] 95• | A |  |
 |  | CUG [L] 20 | CCG [P] 28 | CAG [Q] 42 | CGG [R] 32 | G |  |
 | A | AUU [I] 579 | ACU [T] 162 | AAU [N] 307 | AGU [S] 183 | U |  |
 |  | AUC [I] 85• | ACC [T] 24 | AAC [N] 95• | AGC [S] 29• | C |  |
 |  | AUA [I] 207• | ACA [T] 242• | AAA [K] 517• †| AGA [R] 110• | A |  |
 |  | AUG [M] 233•• | ACG [T] 54 | AAG [K] 75 | AGG [R] 15 | G |  |
 | G | GUU [V] 311 | GCU [A] 186 | GAU [D] 221 | GGU [G] 299 | U |  |
 |  | GUC [V] 38 | GCC [A] 35 | GAC [D] 39• | GGC [G] 41• | C |  |
 |  | GUA [V] 204• | GCA [A] 225• | GAA [E] 283• | GGA [G] 131• | A |  |
 |  | GUG [V] 62 | GCG [A] 64 | GAG [E] 65 | GGG [G] 83 | G |  |