The Great Oxidation Event Expanded the Genetic Repertoire of Arsenic Metabolism and Cycling
The Great Oxidation Event expanded the genetic repertoire of arsenic metabolism and cycling Song-Can Chena,b,c,1, Guo-Xin Suna,1, Yu Yand, Konstantinos T. Konstantinidise,f, Si-Yu Zhange, Ye Denga, Xiao-Min Lia,c, Hui-Ling Cuia,c, Florin Musatb, Denny Poppg, Barry P. Rosenh,2, and Yong-Guan Zhua,i,2 aState Key Lab of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 100085 Beijing, China; bDepartment of Isotope Biogeochemistry, Helmholtz Centre for Environmental Research – UFZ, 04318 Leipzig, Germany; cCollege of Resources and Environment, University of Chinese Academy of Sciences, 100049 Beijing, China; dDepartment of Environmental Science and Engineering, Huaqiao University, 361021 Xiamen, China; eSchool of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA 30332; fSchool of Biological Sciences, Georgia Institute of Technology, Atlanta, GA 30332; gDepartment of Environmental Microbiology, Helmholtz Centre for Environmental Research – UFZ, 04318 Leipzig, Germany; hDepartment of Cellular Biology and Pharmacology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL 33199; and iKey Lab of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, 361021 Xiamen, China Edited by Donald E. Canfield, Institute of Biology and Nordic Center for Earth Evolution (NordCEE), University of Southern Denmark, Odense M., Denmark, and approved March 20, 2020 (received for review January 25, 2020) The rise of oxygen on the early Earth about 2.4 billion years ago under an atmosphere with very low oxygen levels (<<0.001% reorganized the redox cycle of harmful metal(loids), including that compared with present atmospheric level) (9).
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