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<dc:title xml:lang="fr">Motifs de codes circulaires dans les gènes codant les protéines et les ARN ribosomaux</dc:title>
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<dc:subject xml:lang="fr">Motifs du code circulaire</dc:subject>
<dc:subject xml:lang="fr">Code correcteur d'erreurs</dc:subject>
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<dc:subject xml:lang="fr">L'ARN ribosomique</dc:subject>
<dc:subject xml:lang="fr">Cadre de lecture</dc:subject>
<dc:subject xml:lang="fr">Gènes codant les protéines</dc:subject>
<dc:subject xml:lang="fr">Décalage du cadre</dc:subject>
<dc:subject xml:lang="fr">Traduction erreurs</dc:subject>
<dc:subject xml:lang="en">Circular code motifs</dc:subject>
<dc:subject xml:lang="en">Error-correcting code</dc:subject>
<dc:subject xml:lang="en">Standard genetic code</dc:subject>
<dc:subject xml:lang="en">Ribosomal RNAs</dc:subject>
<dc:subject xml:lang="en">Reading frame</dc:subject>
<dc:subject xml:lang="en">Protein-coding genes</dc:subject>
<dc:subject xml:lang="en">Frameshift</dc:subject>
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<tef:elementdEntree autoriteExterne="136707106" autoriteSource="Sudoc">ARN ribosomiques</tef:elementdEntree>
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<dcterms:abstract xml:lang="fr">La thèse porte sur les motifs du code circulaire X, un code correcteur d'erreurs trouvé dans les gènes, qui ont la capacité de trouver le cadre de lecture. Nous avons étudié la conservation des motifs X dans les gènes de différentes espèces et identifié des pressions sélectives spécifiques pour les maintenir. Nous avons aussi identifié des motifs X universels dans l'ARN ribosomique, situés dans des régions fonctionnelles importantes du ribosome et suggérant que les codes circulaires ont représenté une étape importante dans l'émergence du code génétique standard (SGC). Ensuite, nous avons étudié le rôle fonctionnel des motifs X dans la traduction moderne et identifié une forte corrélation entre l'enrichissement des motifs X et le niveau de traduction des gènes. Enfin, nous avons comparé l'optimalité du code X avec le SGC et d'autres codes circulaires maximaux, et identifié une nouvelle fonctionnalité de X dans la minimisation des effets des erreurs après un décalage du cadre.</dcterms:abstract>
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