Codon Table Tool

A codon is a sequence of three nucleotides found in DNA or RNA that corresponds to a specific amino acid or stop signal during protein synthesis. The codon table, also known as the genetic code, is a systematic way of mapping these codons to their corresponding amino acids or stop signals. This codon tool can be used to translate a standard genetic code as well as mitochondrial and nuclear genetic codes into a sequence of amino acids for multiple species.

Second Letter
First Letter U C A G Third Letter
U UUU Phenylalanine UCU Serine UAU Tyrosine UGU Cysteine U
UUC UCC UAC UGC C
UUA Leucine UCA UAA
Stop
UGA
Stop
A
UUG UCG UAG UGG Tryptophan G
C CUU Leucine CCU Proline CAU Histidine CGU Arginine U
CUC CCC CAC CGC C
CUA CCA CAA Glutamine CGA A
CUG CCG CAG CGG G
A AUU Isoleucine ACU Threonine AAU Asparagine AGU Serine U
AUC ACC AAC AGC C
AUA Methionine ACA AAA Lysine AGA Arginine A
AUG ACG AAG AGG G
G GUU Valine GCU Alanine GAU Aspartic Acid GGU Glycine U
GUC GCC GAC GGC C
GUA GCA GAA Glutamic Acid GGA A
GUG GCG GAG GGG G
Second Letter
First Letter U C A G Third Letter
U UUU Phenylalanine UCU Serine UAU Tyrosine UGU Cysteine U
UUC UCC UAC UGC C
UUA Leucine UCA UAA
Stop
UGA
Stop
A
UUG UCG UAG UGG Tryptophan G
C CUU Leucine CCU Proline CAU Histidine CGU Arginine U
CUC CCC CAC CGC C
CUA CCA CAA Glutamine CGA A
CUG Serine CCG CAG CGG G
A AUU Isoleucine ACU Threonine AAU Asparagine AGU Serine U
AUC ACC AAC AGC C
AUA ACA AAA Lysine AGA Arginine A
AUG Methionine ACG AAG AGG G
G GUU Valine GCU Alanine GAU Aspartic Acid GGU Glycine U
GUC GCC GAC GGC C
GUA GCA GAA Glutamic Acid GGA A
GUG GCG GAG GGG G
Second Letter
First Letter U C A G Third Letter
U UUU Phenylalanine UCU Serine UAU Tyrosine UGU Cysteine U
UUC UCC UAC UGC C
UUA Leucine UCA UAA
Stop
UGA Tryptophan A
UUG UCG UAG UGG G
C CUU Leucine CCU Proline CAU Histidine CGU Arginine U
CUC CCC CAC CGC C
CUA CCA CAA Glutamine CGA A
CUG CCG CAG CGG G
A AUU Isoleucine ACU Threonine AAU Asparagine AGU Serine U
AUC ACC AAC AGC C
AUA Methionine ACA AAA Lysine AGA Arginine A
AUG ACG AAG AGG G
G GUU Valine GCU Alanine GAU Aspartic Acid GGU Glycine U
GUC GCC GAC GGC C
GUA GCA GAA Glutamic Acid GGA A
GUG GCG GAG GGG G
Second Letter
First Letter U C A G Third Letter
U UUU Phenylalanine UCU Serine UAU Tyrosine UGU Cysteine U
UUC UCC UAC UGC C
UUA Leucine UCA UAA
Stop
UGA
Stop
A
UUG UCG UAG UGG Tryptophan G
C CUU Leucine CCU Proline CAU Histidine CGU Arginine U
CUC CCC CAC CGC C
CUA CCA CAA Glutamine CGA A
CUG CCG CAG CGG G
A AUU Isoleucine ACU Threonine AAU Asparagine AGU Serine U
AUC ACC AAC AGC C
AUA ACA AAA Lysine AGA Arginine A
AUG Methionine ACG AAG AGG G
G GUU Valine GCU Alanine GAU Aspartic Acid GGU Glycine U
GUC GCC GAC GGC C
GUA GCA GAA Glutamic Acid GGA A
GUG GCG GAG GGG G
Second Letter
First Letter U C A G Third Letter
U UUU Phenylalanine UCU Serine UAU Tyrosine UGU Cysteine U
UUC UCC UAC UGC C
UUA Leucine UCA UAA
Stop
UGA
Stop
A
UUG UCG UAG Glutamine UGG Tryptophan G
C CUU Leucine CCU Proline CAU Histidine CGU Arginine U
CUC CCC CAC CGC C
CUA CCA CAA Glutamine CGA A
CUG CCG CAG CGG G
A AUU Isoleucine ACU Threonine AAU Asparagine AGU Serine U
AUC ACC AAC AGC C
AUA ACA AAA Lysine AGA Arginine A
AUG Methionine ACG AAG AGG G
G GUU Valine GCU Alanine GAU Aspartic Acid GGU Glycine U
GUC GCC GAC GGC C
GUA GCA GAA Glutamic Acid GGA A
GUG GCG GAG GGG G
Second Letter
First Letter U C A G Third Letter
U UUU Phenylalanine UCU Serine UAU Tyrosine UGU Cysteine U
UUC UCC UAC UGC C
UUA Leucine UCA UAA
Stop
UGA
Stop
A
UUG UCG UAG Glutamine UGG Tryptophan G
C CUU Leucine CCU Proline CAU Histidine CGU Arginine U
CUC CCC CAC CGC C
CUA CCA CAA Glutamine CGA A
CUG CCG CAG CGG G
A AUU Isoleucine ACU Threonine AAU Asparagine AGU Serine U
AUC ACC AAC AGC C
AUA ACA AAA Lysine AGA Arginine A
AUG Methionine ACG AAG AGG G
G GUU Valine GCU Alanine GAU Aspartic Acid GGU Glycine U
GUC GCC GAC GGC C
GUA GCA GAA Glutamic Acid GGA A
GUG GCG GAG GGG G
Second Letter
First Letter U C A G Third Letter
U UUU Phenylalanine UCU Serine UAU Tyrosine UGU Cysteine U
UUC UCC UAC UGC C
UUA Leucine UCA UAA Glutamine UGA
Stop
A
UUG UCG UAG UGG Tryptophan G
C CUU Leucine CCU Proline CAU Histidine CGU Arginine U
CUC CCC CAC CGC C
CUA CCA CAA Glutamine CGA A
CUG CCG CAG CGG G
A AUU Isoleucine ACU Threonine AAU Asparagine AGU Serine U
AUC ACC AAC AGC C
AUA ACA AAA Lysine AGA Arginine A
AUG Methionine ACG AAG AGG G
G GUU Valine GCU Alanine GAU Aspartic Acid GGU Glycine U
GUC GCC GAC GGC C
GUA GCA GAA Glutamic Acid GGA A
GUG GCG GAG GGG G
Second Letter
First Letter U C A G Third Letter
U UUU Phenylalanine UCU Serine UAU Tyrosine UGU Cysteine U
UUC UCC UAC UGC C
UUA Leucine UCA UAA
Stop
UGA Tryptophan A
UUG UCG UAG UGG G
C CUU Leucine CCU Proline CAU Histidine CGU Arginine U
CUC CCC CAC CGC C
CUA CCA CAA Glutamine CGA A
CUG CCG CAG CGG G
A AUU Isoleucine ACU Threonine AAU Asparagine AGU Serine U
AUC ACC AAC AGC C
AUA ACA AAA Lysine AGA Arginine A
AUG Methionine ACG AAG AGG G
G GUU Valine GCU Alanine GAU Aspartic Acid GGU Glycine U
GUC GCC GAC GGC C
GUA GCA GAA Glutamic Acid GGA A
GUG GCG GAG GGG G
Second Letter
First Letter U C A G Third Letter
U UUU Phenylalanine UCU Serine UAU Tyrosine UGU Cysteine U
UUC UCC UAC UGC C
UUA Leucine UCA UAA
Stop
UGA Tryptophan A
UUG UCG UAG UGG G
C CUU Leucine CCU Proline CAU Histidine CGU Arginine U
CUC CCC CAC CGC C
CUA CCA CAA Glutamine CGA A
CUG CCG CAG CGG G
A AUU Isoleucine ACU Threonine AAU Asparagine AGU Serine U
AUC ACC AAC AGC C
AUA ACA AAA Lysine AGA Arginine A
AUG Methionine ACG AAG AGG G
G GUU Valine GCU Alanine GAU Aspartic Acid GGU Glycine U
GUC GCC GAC GGC C
GUA GCA GAA Glutamic Acid GGA A
GUG GCG GAG GGG G
Second Letter
First Letter U C A G Third Letter
U UUU Phenylalanine UCU Serine UAU Tyrosine UGU Cysteine U
UUC UCC UAC UGC C
UUA Leucine UCA UAA
Stop
UGA Tryptophan A
UUG UCG UAG UGG G
C CUU Leucine CCU Proline CAU Histidine CGU Arginine U
CUC CCC CAC CGC C
CUA CCA CAA Glutamine CGA A
CUG CCG CAG CGG G
A AUU Isoleucine ACU Threonine AAU Asparagine AGU Serine U
AUC ACC AAC AGC C
AUA ACA AAA AGA A
AUG Methionine ACG AAG Lysine AGG G
G GUU Valine GCU Alanine GAU Aspartic Acid GGU Glycine U
GUC GCC GAC GGC C
GUA GCA GAA Glutamic Acid GGA A
GUG GCG GAG GGG G
Second Letter
First Letter U C A G Third Letter
U UUU Phenylalanine UCU Serine UAU Tyrosine UGU Cysteine U
UUC UCC UAC UGC C
UUA Leucine UCA UAA
Stop
UGA A
UUG UCG UAG UGG Tryptophan G
C CUU Leucine CCU Proline CAU Histidine CGU Arginine U
CUC CCC CAC CGC C
CUA CCA CAA Glutamine CGA A
CUG CCG CAG CGG G
A AUU Isoleucine ACU Threonine AAU Asparagine AGU Serine U
AUC ACC AAC AGC C
AUA ACA AAA Lysine AGA Arginine A
AUG Methionine ACG AAG AGG G
G GUU Valine GCU Alanine GAU Aspartic Acid GGU Glycine U
GUC GCC GAC GGC C
GUA GCA GAA Glutamic Acid GGA A
GUG GCG GAG GGG G
Second Letter
First Letter U C A G Third Letter
U UUU Phenylalanine UCU Serine UAU Tyrosine UGU Cysteine U
UUC UCC UAC UGC C
UUA Leucine UCA UAA UGA Tryptophan A
UUG UCG UAG
Stop
UGG G
C CUU Leucine CCU Proline CAU Histidine CGU Arginine U
CUC CCC CAC CGC C
CUA CCA CAA Glutamine CGA A
CUG CCG CAG CGG G
A AUU Isoleucine ACU Threonine AAU Asparagine AGU Serine U
AUC ACC AAC AGC C
AUA ACA AAA AGA A
AUG Methionine ACG AAG Lysine AGG G
G GUU Valine GCU Alanine GAU Aspartic Acid GGU Glycine U
GUC GCC GAC GGC C
GUA GCA GAA Glutamic Acid GGA A
GUG GCG GAG GGG G
Second Letter
First Letter U C A G Third Letter
U UUU Phenylalanine UCU Serine UAU Tyrosine UGU Cysteine U
UUC UCC UAC UGC C
UUA Leucine UCA UAA
Stop
UGA Tryptophan A
UUG UCG UAG UGG G
C CUU Leucine CCU Proline CAU Histidine CGU Arginine U
CUC CCC CAC CGC C
CUA CCA CAA Glutamine CGA A
CUG CCG CAG CGG G
A AUU Isoleucine ACU Threonine AAU Asparagine AGU Serine U
AUC ACC AAC AGC C
AUA Methionine ACA AAA Lysine AGA A
AUG ACG AAG AGG G
G GUU Valine GCU Alanine GAU Aspartic Acid GGU Glycine U
GUC GCC GAC GGC C
GUA GCA GAA Glutamic Acid GGA A
GUG GCG GAG GGG G
Second Letter
First Letter U C A G Third Letter
U UUU Phenylalanine UCU Serine UAU Tyrosine UGU Cysteine U
UUC UCC UAC UGC C
UUA Leucine UCA
Stop
UAA
Stop
UGA
Stop
A
UUG UCG Serine UAG Leucine UGG Tryptophan G
C CUU Leucine CCU Proline CAU Histidine CGU Arginine U
CUC CCC CAC CGC C
CUA CCA CAA Glutamine CGA A
CUG CCG CAG CGG G
A AUU Isoleucine ACU Threonine AAU Asparagine AGU Serine U
AUC ACC AAC AGC C
AUA ACA AAA Lysine AGA Arginine A
AUG Methionine ACG AAG AGG G
G GUU Valine GCU Alanine GAU Aspartic Acid GGU Glycine U
GUC GCC GAC GGC C
GUA GCA GAA Glutamic Acid GGA A
GUG GCG GAG GGG G
Second Letter
First Letter U C A G Third Letter
U UUU Phenylalanine UCU Serine UAU Tyrosine UGU Cysteine U
UUC UCC UAC UGC C
UUA Leucine UCA UAA Glutamine UGA
Stop
A
UUG UCG UAG UGG Tryptophan G
C CUU Leucine CCU Proline CAU Histidine CGU Arginine U
CUC CCC CAC CGC C
CUA CCA CAA Glutamine CGA A
CUG CCG CAG CGG G
A AUU Isoleucine ACU Threonine AAU Asparagine AGU Serine U
AUC ACC AAC AGC C
AUA ACA AAA Lysine AGA Arginine A
AUG Methionine ACG AAG AGG G
G GUU Valine GCU Alanine GAU Aspartic Acid GGU Glycine U
GUC GCC GAC GGC C
GUA GCA GAA Glutamic Acid GGA A
GUG GCG GAG GGG G
Second Letter
First Letter U C A G Third Letter
U UUU Phenylalanine UCU Serine UAU Tyrosine UGU Cysteine U
UUC UCC UAC UGC C
UUA
Stop
UCA UAA
Stop
UGA
Stop
A
UUG Leucine UCG UAG UGG Tryptophan G
C CUU Leucine CCU Proline CAU Histidine CGU Arginine U
CUC CCC CAC CGC C
CUA CCA CAA Glutamine CGA A
CUG CCG CAG CGG G
A AUU Isoleucine ACU Threonine AAU Asparagine AGU Serine U
AUC ACC AAC AGC C
AUA ACA AAA Lysine AGA Arginine A
AUG Methionine ACG AAG AGG G
G GUU Valine GCU Alanine GAU Aspartic Acid GGU Glycine U
GUC GCC GAC GGC C
GUA GCA GAA Glutamic Acid GGA A
GUG GCG GAG GGG G
Second Letter
First Letter U C A G Third Letter
U UUU Phenylalanine UCU Serine UAU Tyrosine UGU Cysteine U
UUC UCC UAC UGC C
UUA Leucine UCA UAA
Stop
UGA Tryptophan A
UUG UCG UAG UGG G
C CUU Leucine CCU Proline CAU Histidine CGU Arginine U
CUC CCC CAC CGC C
CUA CCA CAA Glutamine CGA A
CUG CCG CAG CGG G
A AUU Isoleucine ACU Threonine AAU Asparagine AGU Serine U
AUC ACC AAC AGC C
AUA Methionine ACA AAA AGA A
AUG ACG AAG Lysine AGG G
G GUU Valine GCU Alanine GAU Aspartic Acid GGU Glycine U
GUC GCC GAC GGC C
GUA GCA GAA Glutamic Acid GGA A
GUG GCG GAG GGG G
Second Letter
First Letter U C A G Third Letter
U UUU Phenylalanine UCU Serine UAU Tyrosine UGU Cysteine U
UUC UCC UAC UGC C
UUA Leucine UCA UAA
Stop
UGA Tryptophan A
UUG UCG UAG UGG G
C CUU Leucine CCU Proline CAU Histidine CGU Arginine U
CUC CCC CAC CGC C
CUA CCA CAA Glutamine CGA A
CUG CCG CAG CGG G
A AUU Isoleucine ACU Threonine AAU Asparagine AGU Serine U
AUC ACC AAC AGC C
AUA Methionine ACA AAA Lysine AGA
Stop
A
AUG ACG AAG AGG G
G GUU Valine GCU Alanine GAU Aspartic Acid GGU Glycine U
GUC GCC GAC GGC C
GUA GCA GAA Glutamic Acid GGA A
GUG GCG GAG GGG G
Second Letter
First Letter U C A G Third Letter
U UUU Phenylalanine UCU Serine UAU Tyrosine UGU Cysteine U
UUC UCC UAC UGC C
UUA Leucine UCA UAA
Stop
UGA Tryptophan A
UUG UCG UAG UGG G
C CUU Leucine CCU Proline CAU Histidine CGU Arginine U
CUC CCC CAC CGC C
CUA CCA CAA Glutamine CGA A
CUG CCG CAG CGG G
A AUU Isoleucine ACU Threonine AAU Asparagine AGU Serine U
AUC ACC AAC AGC C
AUA Methionine ACA AAA Lysine AGA
Stop
A
AUG ACG AAG AGG G
G GUU Valine GCU Alanine GAU Aspartic Acid GGU Glycine U
GUC GCC GAC GGC C
GUA GCA GAA Glutamic Acid GGA A
GUG GCG GAG GGG G