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. 1990 Sep 11;18(17):5027-30.
doi: 10.1093/nar/18.17.5027.

A potato mitochondrial isoleucine tRNA is coded for by a mitochondrial gene possessing a methionine anticodon

F Weber  1 , A Dietrich, J H Weil, L Maréchal-Drouard
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Free PMC article

A potato mitochondrial isoleucine tRNA is coded for by a mitochondrial gene possessing a methionine anticodon

F Weber et al. Nucleic Acids Res. .
Free PMC article

Abstract

The nucleotide sequence of a potato mitochondrial tRNA(Ile) has been determined. This tRNA has a lysidine-like minor nucleotide in the first position of the anticodon (position 34). The corresponding mitochondrial gene has been cloned and sequenced. This gene has a CAT anticodon which corresponds to methionine. The C residue in the anticodon must therefore be post-transcriptionally modified. The mature tRNA has isoleucine-accepting activity but no methionine-accepting activity. This is the first report showing that in plant mitochondria a post-transcriptional modification could change the amino-acid specificity of a tRNA, as compared to that of the corresponding gene.

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References

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