Codon table

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Codon table

<tr> <th>C</th> <td> CTT Leu ‘‘‘L‘‘‘ Leucine
CTC Leu ‘‘‘L‘‘‘ Leucine
CTA Leu ‘‘‘L‘‘‘ Leucine
CTG Leu ‘‘‘L‘‘‘ Leucine
</td> <td> CCT Pro ‘‘‘P‘‘‘ Proline
CCC Pro ‘‘‘P‘‘‘ Proline
CCA Pro ‘‘‘P‘‘‘ Proline
CCG Pro ‘‘‘P‘‘‘ Proline
</td> <td> CAT His ‘‘‘H‘‘‘ Histidine
CAC His ‘‘‘H‘‘‘ Histidine
CAA Gln ‘‘‘Q‘‘‘ Glutamine
CAG Gln ‘‘‘Q‘‘‘ Glutamine
</td> <td> CGT Arg ‘‘‘R‘‘‘ Arginine
CGC Arg ‘‘‘R‘‘‘ Arginine
CGA Arg ‘‘‘R‘‘‘ Arginine
CGG Arg ‘‘‘R‘‘‘ Arginine
</td> </tr> <tr> <th>A</th> <td> ATT Ile ‘‘‘I‘‘‘ Isoleucine
ATC Ile ‘‘‘I‘‘‘ Isoleucine
ATA Ile ‘‘‘I‘‘‘ Isoleucine
ATG Met ‘‘‘M‘‘‘ Methionine, Start
</td> <td> ACT Thr ‘‘‘T‘‘‘ Threonine
ACC Thr ‘‘‘T‘‘‘ Threonine
ACA Thr ‘‘‘T‘‘‘ Threonine
ACG Thr ‘‘‘T‘‘‘ Threonine
</td> <td> AAT Asn ‘‘‘N‘‘‘ Asparagine
AAC Asn ‘‘‘N‘‘‘ Asparagine
AAA Lys ‘‘‘K‘‘‘ Lysine
AAG Lys ‘‘‘K‘‘‘ Lysine
</td> <td> AGT Ser ‘‘‘S‘‘‘ Serine
AGC Ser ‘‘‘S‘‘‘ Serine
AGA Arg ‘‘‘R‘‘‘ Arginine
AGG Arg ‘‘‘R‘‘‘ Arginine
</td> </tr> <tr> <th>G</th> <td> GTT Val ‘‘‘V‘‘‘ Valine
GTC Val ‘‘‘V‘‘‘ Valine
GTA Val ‘‘‘V‘‘‘ Valine
GTG Val ‘‘‘V‘‘‘ Valine
</td> <td> GCT Ala ‘‘‘A‘‘‘ Alanine
GCC Ala ‘‘‘A‘‘‘ Alanine
GCA Ala ‘‘‘A‘‘‘ Alanine
GCG Ala ‘‘‘A‘‘‘ Alanine
</td> <td> GAT Asp ‘‘‘D‘‘‘ Aspartic acid
GAC Asp ‘‘‘D‘‘‘ Aspartic acid
GAA Glu ‘‘‘E‘‘‘ Glutamic acid
GAG Glu ‘‘‘E‘‘‘ Glutamic acid
</td> <td> GGT Gly ‘‘‘G‘‘‘ Glycine
GGC Gly ‘‘‘G‘‘‘ Glycine
GGA Gly ‘‘‘G‘‘‘ Glycine
GGG Gly ‘‘‘G‘‘‘ Glycine
</td> </tr> </table> 1The codon ATG both codes for methionine and serves as an initiation site: the first ATG in an mRNA's coding region is where translation into protein begins.
2UGA can also code for selenomethionine: the twenty-first amino acid, discovered in 1986.
3UAG can also code for pyrrolysine: the twenty-second amino acid, discovered in 2002.

TTT Phe ‘‘‘F‘‘‘ Phenylalanine
TTC Phe ‘‘‘F‘‘‘ Phenylalanine
TTA Leu ‘‘‘L‘‘‘ Leucine
TTG Leu ‘‘‘L‘‘‘ Leucine

TCT Ser ‘‘‘S‘‘‘ Serine
TCC Ser ‘‘‘S‘‘‘ Serine
TCA Ser ‘‘‘S‘‘‘ Serine
TCG Ser ‘‘‘S‘‘‘ Serine

TAT Tyr ‘‘‘Y‘‘‘ Tyrosine
TAC Tyr ‘‘‘Y‘‘‘ Tyrosine
TAA Ochre (Stop)
TAG Amber (Stop)3

TGT Cys ‘‘‘C‘‘‘ Cysteine
TGC Cys ‘‘‘C‘‘‘ Cysteine
TGA Opal (Stop)2
TGG Trp W</tt>‘‘‘ Tryptophan