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Codon Sequences
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Related links

Timeline: 1966
Structure of DNA
The Genetic Code

In 1967 , Marshall Niremberg, Heinrich Mathaei, and Severo Ochoa deciphered the genetic code. Here is a table of the complete genetic code, showing how messenger RNA triplets code for amino acids. Note how there are several different ways that each amino acid can be coded.
Codon Amino Acid Codon Amino Acid
       
UUU
UUC
UUA
UUG
Phenylalanine
Phenylalanine
Leucine
Leucine
UAU
UAC
Tyrosine
Tyrosine
UAA
UAG
None (stop signal)
None (stop signal)
CUU
CUC
CUA
CUG
Leucine
Leucine
Leucine
Leucine
CAU
CAC
Histidine
Histidine
CAA
CAG
Glutamine
Glutamine
AUU
AUC
AUA
AUG
Isoleucine
Isoleucine
Isoleucine
Methioninie
(start codon)
AAU
AAC
Asparagine
Asparagine
AAA
AAG
Lysine
Lysine
GUU
GUC
GUA
GUG
Valine
Valine
Valine
Valine
GAU
GAC
GAA
GAG
Aspartic Acid
Aspartic Acid
Aspartic Acid
Aspartic Acid
UCU
UCC
UCA
UCG
Serine
Serine
Serine
Serine
UGU
UGC
Cysteine
Cysteine
UGA None (stop signal)
UGG Tryptophan
CCU
CCC
CCA
CCG
Proline
Proline
Proline
Proline
CGU
CGC
CGA
CGG
Arginine
Arginine
Arginine
Arginine
ACU
ACC
ACA
ACG
Threonine
Threonine
Threonine
Threonine
AGU
AGC
Serine
Serine
AGA
AGG
Arginine
Arginine
GCU
GCC
GCA
GCG
Alanine
Alanine
Alanine
Alanine
GGU
GGC
GGA
GGG
Gylcine
Gylcine
Gylcine
Gylcine
       
Codon Box Color Key
  = Nonpolar    
  = Nonionizable Polar    
  = Ionizable: Basic    
  = Ionizable: Acidic    

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