Abstract

Analysis of an almost complete mammalian mitochondrial DNA sequence has identified 23 possible tRNA genes and we speculate here that these are sufficient to translate all the codons of the mitochondrial genetic code. This number is much smaller than the minimum of 31 required by the wobble hypothesis. For each of the eight genetic code boxes with four codons for one amino acid we find a single specific tRNA gene with T in the first (wobble) position of the anticodon. We suggest that these tRNAs with U in the wobble position can recognize all four codons in these genetic code boxes either by a "two out of three" base interaction or by U.N wobble.

Keywords

Wobble base pairGenetic codeSpeed wobbleTransfer RNAMitochondrial DNAGeneticsBiologyGeneBase pairTranslation (biology)Codon usage biasRNAGenomeMessenger RNAPhysics

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Publication Info

Year
1980
Type
article
Volume
77
Issue
6
Pages
3164-3166
Citations
271
Access
Closed

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B. G. Barrell, Stephen K. Anderson, Alan T. Bankier et al. (1980). Different pattern of codon recognition by mammalian mitochondrial tRNAs.. Proceedings of the National Academy of Sciences , 77 (6) , 3164-3166. https://doi.org/10.1073/pnas.77.6.3164

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DOI
10.1073/pnas.77.6.3164