Paleoproterozoic sterol biosynthesis and the rise of oxygen

David A. Gold, Abigail Caron, Gregory P. Fournier and Roger E. Summons ()
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David A. Gold: Atmospheric and Planetary Science, Massachusetts Institute of Technology
Abigail Caron: Atmospheric and Planetary Science, Massachusetts Institute of Technology
Gregory P. Fournier: Atmospheric and Planetary Science, Massachusetts Institute of Technology
Roger E. Summons: Atmospheric and Planetary Science, Massachusetts Institute of Technology

Nature, 2017, vol. 543, issue 7645, 420-423

Abstract: Steranes in ancient rocks have been used as ‘molecular fossils’, but the very earliest records of steranes have been shown to be contaminants; here, the presence of two key sterol biosynthesis enzymes in eukaryotes and bacteria suggests at least one gene transfer between bacteria and the earliest eukaryotes occurred some 2.3 billion years ago.

Date: 2017
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DOI: 10.1038/nature21412

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