Compiled by Andrzej (Anjay) Elzanowski and Jim Ostell at National Center for Biotechnology Information (NCBI), Bethesda, Maryland, U.S.A.

NCBI takes great care To ensure that the translation For Each coding sequence (CDS) present In GenBank records Is correct. Central To this effort Is careful checking On the taxonomy Of Each record And assignment Of the correct genetic code (shown As a /transl_table qualifier On the CDS In the flat files) For Each organism And record. This page summarizes And references this work.

The synopsis presented below Is based primarily On the reviews by Osawa et al. (1992) And Jukes And Osawa (1993). Listed In square brackets [] (under Systematic Range) are tentative assignments Of a particular code based On sequence homology And/Or phylogenetic relationships.

The print-form ASN.1 version Of this document, which includes all the genetic codes outlined below, Is also available here. Detailed information On codon usage can be found at the Codon Usage Database.

GenBank format by historical convention displays mRNA sequences Using the DNA alphabet. Thus, For the convenience Of people reading GenBank records, the genetic code tables shown here use T instead Of U.

The following genetic codes are described here:

  1. The Standard Code
  2. The Vertebrate Mitochondrial Code
  3. The Yeast Mitochondrial Code
  4. The Mold, Protozoan, And Coelenterate Mitochondrial Code And the Mycoplasma/Spiroplasma Code
  5. The Invertebrate Mitochondrial Code
  6. The Ciliate, Dasycladacean And Hexamita Nuclear Code
  7. The Echinoderm And Flatworm Mitochondrial Code
  8. The Euplotid Nuclear Code
  9. The Bacterial, Archaeal And Plant Plastid Code
  10. The Alternative Yeast Nuclear Code
  11. The Ascidian Mitochondrial Code
  12. The Alternative Flatworm Mitochondrial Code
  13. Chlorophycean Mitochondrial Code
  14. Trematode Mitochondrial Code
  15. Scenedesmus obliquus Mitochondrial Code
  16. Thraustochytrium Mitochondrial Code
  17. Pterobranchia Mitochondrial Code
  18. Candidate Division SR1 And Gracilibacteria Code

http://www.ncbi.nlm.nih.gov/Taxonomy/taxonomyhome.html/index.cgi?chapter=tgencodes#SG25