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<dc:title xml:lang="en">Study of genistein metabolon structure : a combined experimental and computational strategy</dc:title>
<dcterms:alternative xml:lang="fr">Étude de la structure du métabolon de la génistéine : une approche combinant méthodes expérimentales et informatiques</dcterms:alternative>
<dc:subject xml:lang="fr">Métabolon</dc:subject>
<dc:subject xml:lang="fr">Voie de biosynthèse des isoflavonoïdes</dc:subject>
<dc:subject xml:lang="fr">Cytochrome P450</dc:subject>
<dc:subject xml:lang="fr">Chalcone isomérase</dc:subject>
<dc:subject xml:lang="fr">Chalcone isomeraselike</dc:subject>
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<dc:subject xml:lang="en">Metabolon</dc:subject>
<dc:subject xml:lang="en">Isoflavonoid pathway</dc:subject>
<dc:subject xml:lang="en">Cytochrome P450</dc:subject>
<dc:subject xml:lang="en">Chalcone isomerase</dc:subject>
<dc:subject xml:lang="en">Chalcone isomerase-like</dc:subject>
<dc:subject xml:lang="en">Chalcone synthase</dc:subject>
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<tef:elementdEntree autoriteExterne="029893690" autoriteSource="Sudoc">Plantes -- Métabolites</tef:elementdEntree>
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<tef:elementdEntree autoriteExterne="069518718" autoriteSource="Sudoc">Isoflavones</tef:elementdEntree>
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<dcterms:abstract xml:lang="fr">Un metabolon est un complexe multienzymatique dynamique dont les protéines sont maintenues par des interactions transitoires, favorisant le passage direct des substrats entre les sites actifs et jouant ainsi un rôle clé dans la régulation et la compartimentation métabolique. Ce travail propose un modèle d’un métabolon impliqué dans la biosynthèse de la génistéine chez Glycine max, basé sur des structures de complexes multiprotéiques prédites à partir de données d’interactions protéine-protéine. La sélection des isoformes protéiques utilisées a été confirmée in vivo. L’hypothèse de l’homo-dimérisation des protéines solubles du métabolon a été étudiée grâce à la chromatographie d’échange de taille, la cristallographie aux rayons X et la modélisation moléculaire.L’analyse comparative des isoformes de la chalcone isomérase, y compris une forme structurale apparentée, suggère que CHIL contribue à la séquestration des sous-produits lors de la réaction de biosynthèse de la chalcone.</dcterms:abstract>
<dcterms:abstract xml:lang="en">A metabolon is a dynamic multienzymatic complex whose proteins are held together by transient interactions, enabling direct substrate transfer between active sites and contributing to metabolic regulation and compartmentalization. In the present work, a model of the genistein (isoflavonoid)-synthesizing metabolon functional in Glycine max has been proposed based on several predicted multiprotein complex structures derived from pairwise protein-protein interaction data. The selection of the utilized protein isoforms was confirmed in vivo. The hypothesis of homodimerization for the soluble proteins of the metabolon has been explored relying on size-exclusion chromatography, X-ray crystallography, and molecular modeling data. The comparative analysis of chalcone isomerase isoforms, including a structural chalcone isomerase-like, has been produced. The results support a hypothesis of CHIL function in by-product sequestration during the chalcone biosynthesis.</dcterms:abstract>
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