Codon

A codon is three bases in a DNA or RNA sequence which specify a single amino acid.

## Amino acid codon codes[edit]

Amino Acid  |  Single Letter Code  |  DNA Codons

|
|

Isoleucine  |  I  |  ATT, ATC, ATA
Leucine  |  L  |  CTT, CTC, CTA, CTG, TTA, TTG
Valine  |  V  |  GTT, GTC, GTA, GTG
Phenylalanine  |  F  |  TTT, TTC
Methionine  |  M  |  ATG
Cysteine  |  C  |  TGT, TGC
Alanine  |  A  |  GCT, GCC, GCA, GCG
Glycine  |  G  |  GGT, GGC, GGA, GGG
Proline  |  P  |  CCT, CCC, CCA, CCG
Threonine  |  T  |  ACT, ACC, ACA, ACG
Serine  |  S  |  TCT, TCC, TCA, TCG, AGT, AGC
Tyrosine  |  Y  |  TAT, TAC
Tryptophan  |  W  |  TGG
Glutamine  |  Q  |  CAA, CAG
Asparagine  |  N  |  AAT, AAC
Histidine  |  H  |  CAT, CAC
Glutamic acid  |  E  |  GAA, GAG
Aspartic acid  |  D  |  GAT, GAC
Lysine  |  K  |  AAA, AAG
Arginine  |  R  |  CGT, CGC, CGA, CGG, AGA, AGG
Start Codons  |  Start  |  ATG, rarely GTG
Stop Codons  |  Stop  |  TAA, TAG, TGA