A hydrogen-dependent geochemical analogue of primordial carbon and energy metabolism

Accès libre Peer reviewed | |
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Version acceptée pour publication (post-print auteur) | |
Paternité - Pas d'utilisation commerciale - Partage selon les Conditions Initiales [CC] [BY] [NC] [SA] ![]() |
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Auteurs |
Martina Preiner Kensuke Igarashi Kamila Muchowska Mingquan Yu Sreejith J. Varma Karl Kleinermanns Masaru K. Nobu Yoichi Kamagata Harun Tüysüz Joseph Moran William F. Martin |
Unité de recherche du site |
Institut de Science et d'Ingénierie Supramoléculaires - ISIS - UMR7006 |
Langue |
en |
Volume |
4 |
Numéro |
4 |
Page de début |
534 |
Page de fin |
542 |
Date de première publication |
2020-04-02 |
ISSN |
2397-334X |
Titre de la source (revue, livre…) |
Nature Ecology & Evolution |
Résumé |
Hydrogen gas, H2, is generated by alkaline hydrothermal vents through an ancient geochemical process called serpentinization in which water reacts with iron containing minerals deep within the Earth's crust. H2 is the electron donor for the most Show moreHydrogen gas, H2, is generated by alkaline hydrothermal vents through an ancient geochemical process called serpentinization in which water reacts with iron containing minerals deep within the Earth's crust. H2 is the electron donor for the most ancient and the only energy releasing route of biological CO2 fixation, the acetyl-CoA pathway. At the origin of metabolism, CO2 fixation by hydrothermal H2 within serpentinizing systems could have preceded and patterned biotic pathways. Here we show that three hydrothermal minerals—greigite (Fe3S4), magnetite (Fe3O4) and awaruite (Ni3Fe)—catalyse the fixation of CO2 with H2 at 100°C under alkaline aqueous conditions. The product spectrum includes formate (up to 200 mM), acetate (up to 100 µM), pyruvate (up to 10 µM), methanol (up to 100 µM), and methane. The results shed light on both the geochemical origin of microbial metabolism and on the nature of abiotic formate and methane synthesis in modern hydrothermal vents. Show less |
DOI | 10.1038/s41559-020-1125-6 |
Titre abrégé de la source |
Nat Ecol Evol |
Type de publication |
article |
Type de publication |
ACL |
Topic |
Chimie/Autre |
Unité de recherche extérieure au site |
nstitute for Molecular Evolution, University of Düsseldorf, Düsseldorf, Germany |
Fonction |
aut |
Identifiant ORCID |
278516133 |
Identifiant idREF |
184481198 |
Audience |
International |
Envoyer vers HAL |
5 |
URL | https://univoak.eu/islandora/object/islandora:106644 |