Codon table: Difference between revisions
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==Codon table== | Codon tables describe how the triplet codon of RNA (or DNA) is read by specific tRNAs to map to a particular amino acid. Many organisms use the Standard Codon Table, shown below. | ||
==Standard Codon table== | |||
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Revision as of 11:51, 2 June 2006
Codon tables describe how the triplet codon of RNA (or DNA) is read by specific tRNAs to map to a particular amino acid. Many organisms use the Standard Codon Table, shown below.
Standard Codon table
T | C | A | G | |
---|---|---|---|---|
T |
TTT Phe F Phenylalanine |
TCT Ser S Serine |
TAT Tyr Y Tyrosine |
TGT Cys C Cysteine |
C |
CTT Leu L Leucine |
CCT Pro P Proline |
CAT His H Histidine |
CGT Arg R Arginine |
A |
ATT Ile I Isoleucine |
ACT Thr T Threonine |
AAT Asn N Asparagine |
AGT Ser S Serine |
G |
GTT Val V Valine |
GCT Ala A Alanine |
GAT Asp D Aspartic acid |
GGT Gly G Glycine |
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.