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<dcterms:abstract xml:lang="fr">L'émergence des voies métaboliques fondamentales sur Terre est l'un des enjeux majeurs de l'étude de l'origine de la vie. Le scénario du métabolisme d'abord suggère l'émergence de la vie favorisée par la catalyse inorganique dans des conditions primitives dans le cadre de la biochimie moderne. Ce travail de thèse a exploré le fait que sous catalyse métallique, une chimie réaliste est possible si certaines conditions ou certains mécanismes sont remplis. Nous avons découvert avec succès la synthèse d'acides aminés, par des réactions de transamination et d'amination réductrice à partir d'α-cétoacides, qui sont des intermédiaires du cycle rTCA/glyoxylate. En outre, l'oligomérisation des acides aminés dans un environnement riche en eau directement des α-cétoacides aux oligomères et le réseau de réaction auto-organisé piloté par l'hydrogène reliant le cycle rTCA aux acides aminés dans des conditions de pot unique sont également discutés.</dcterms:abstract>
<dcterms:abstract xml:lang="en">The emergence of basic metabolic pathways on Earth is one of the major challenges in the study of the origin of life. The metabolism-first scenario suggests the emergence of life promoted by inorganic catalysis under primitive conditions within the framework of modern biochemistry. This dissertation work explored that under metal catalysis, life-like chemistry is possible if certain conditions or mechanisms are met. We successfully uncovered amino acids synthesis, through transamination and reductive amination reactions from α-ketoacids, which are intermediates of the rTCA/glyoxylate cycle. Furthermore, amino acids oligomerization in water rich environment directly from α-ketoacids to oligomers and hydrogen driven self-organised reaction network connecting rTCA cycle to amino acids in one-pot conditions are also discussed.</dcterms:abstract>
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