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Iron-sulfur (Fe-S) clusters are protein cofactors essential for life. It is believed that iron-sulfur clusters are synthesized via complex multiprotein cellular machineries that are thought to have arisen in response to increased oxygen on Earth. The results of a recent study indicate that the specific machinery for Fe-S biosynthesis is in fact much older. Their origin dates back to the last universal common ancestor (LUCA), long before the oxygenation of the atmosphere.
CEA is a French government-funded technological research organisation in four main areas: low-carbon energies, defense and security, information technologies and health technologies. A prominent player in the European Research Area, it is involved in setting up collaborative projects with many partners around the world.