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- W128646142 abstract "Research Article17 October 1994free access Homing of a group II intron in yeast mitochondrial DNA is accompanied by unidirectional co-conversion of upstream-located markers. J. Lazowska J. Lazowska Centre de Génétique Moléculaire du CNRS, Gif-sur-Yvette, France. Search for more papers by this author B. Meunier B. Meunier Centre de Génétique Moléculaire du CNRS, Gif-sur-Yvette, France. Search for more papers by this author C. Macadre C. Macadre Centre de Génétique Moléculaire du CNRS, Gif-sur-Yvette, France. Search for more papers by this author J. Lazowska J. Lazowska Centre de Génétique Moléculaire du CNRS, Gif-sur-Yvette, France. Search for more papers by this author B. Meunier B. Meunier Centre de Génétique Moléculaire du CNRS, Gif-sur-Yvette, France. Search for more papers by this author C. Macadre C. Macadre Centre de Génétique Moléculaire du CNRS, Gif-sur-Yvette, France. Search for more papers by this author Author Information J. Lazowska1, B. Meunier1 and C. Macadre1 1Centre de Génétique Moléculaire du CNRS, Gif-sur-Yvette, France. The EMBO Journal (1994)13:4963-4972https://doi.org/10.1002/j.1460-2075.1994.tb06823.x PDFDownload PDF of article text and main figures. ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InMendeleyWechatReddit Figures & Info Group II introns ai1 and ai2 of the Saccharomyces cerevisiae mitochondrial COXI gene encode proteins having a dual function (maturase and reverse transcriptase) and are mobile genetic elements. By construction of adequate donor genomes, we demonstrate that each of them is self-sufficient and practises homing in the absence of homing-type endonucleases encoded by either group I introns or the ENS2 gene. Each of the S. cerevisiae group II self-mobile introns was tested for its ability to invade mitochondrial DNA (mtDNA) from two related Saccharomyces species. Surprisingly, only ai2 was observed to integrate into both genomes. The non-mobility of ai1 was clearly correlated with some polymorphic changes occurring in sequences flanking its insertion sites in the recipient mtDNAs. Importantly, studies of the behaviour of these introns in interspecific crosses demonstrate that flanking marker co-conversion accompanying group II intron homing is unidirectional and efficient only in the 3′ to 5′ direction towards the upstream exon. Thus, the polar co-conversion and dependence of the splicing proficiency of the intron reported previously by us are hallmarks of group II intron homing, which significantly distinguish it from the strictly DNA-based group I intron homing and strictly RNA-based group II intron transposition. Previous ArticleNext Article Volume 13Issue 201 October 1994In this issue RelatedDetailsLoading ..." @default.
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- W128646142 title "Homing of a group II intron in yeast mitochondrial DNA is accompanied by unidirectional co-conversion of upstream-located markers." @default.
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