Isotopic evidence for biological nitrogen fixation by molybdenum-nitrogenase from 3.2 Gyr

Eva E. Stüeken (), Roger Buick, Bradley M. Guy and Matthew C. Koehler
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Eva E. Stüeken: University of Washington
Roger Buick: University of Washington
Bradley M. Guy: University of Johannesburg, Auckland Park 2006, South Africa
Matthew C. Koehler: University of Washington

Nature, 2015, vol. 520, issue 7549, 666-669

Abstract: Nitrogen isotope ratios from rocks between 3.2 and 2.75 billion years old are most readily explained by biological nitrogen fixation, most probably using the metal molybdenum as a cofactor, showing that nitrogen fixation is at least 3.2 billion years old and suggesting that molybdenum was available to organisms long before the Great Oxidation Event.

Date: 2015
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DOI: 10.1038/nature14180

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