Nucleic Acids Research, 1984, Vol. 12, No. 14 5757-5765
© 1984
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A leucine tRNA gene adjacent to the QA gene du of Neurospora crassa
Department of Molecular and Population Genetics, University of Georgia Athens, GA 30602, USA
Received February 21, 1984. Accepted April 13, 1984.
A single RNALeu gene has been localized and sequenced from Neurospora crassa. It is located only 375 bp from the qa gene cluster and it is the only tRNA or 5S rRNA gene within this cloned 37 kb region. The gene encodes a tRNALeu with the anti-codon AAG, and unlike the other nuclear eukaryotic tRNALeu (AAG) gene sequenced (from C. elegans), contains an intervening sequence of 27 bp. The Neurospoz-a tRNA (AAG) is 84% and 73% homologous respectively to the C. elegans and bovine tRNALeu(AAG) and is 84% homolo gous to a Drosophila tRNALeu(CAA). However, it is only 65% homologous to a yeast tRNALeu(CAA) and there is little conservation of intervening sequences or V-loop regions. The gene hybridizes to at least 16 other DNA fragments in the Neurospora genome. Its expression does not seem to be linked to that of the qa genes.
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