DOI: 10.1038/ngeo3006
论文题名: Metal availability and the expanding network of microbial metabolisms in the Archaean eon
作者: Moore E.K. ; Jelen B.I. ; Giovannelli D. ; Raanan H. ; Falkowski P.G.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2017
卷: 10, 期: 9 起始页码: 629
结束页码: 636
语种: 英语
Scopus关键词: Archean
; biofilm
; enzyme
; enzyme activity
; metabolism
; metal
; methane
; methanogenesis
; microbial ecology
; oxic conditions
; oxygen
; photosynthesis
; redox potential
英文摘要: Life is based on energy gained by electron-transfer processes; these processes rely on oxidoreductase enzymes, which often contain transition metals in their structures. The availability of different metals and substrates has changed over the course of Earth's history as a result of secular changes in redox conditions, particularly global oxygenation. New metabolic pathways using different transition metals co-evolved alongside changing redox conditions. Sulfur reduction, sulfate reduction, metha-nogenesis and anoxygenic photosynthesis appeared between about 3.8 and 3.4 billion years ago. The oxidoreductases responsible for these metabolisms incorporated metals that were readily available in Archaean oceans, chiefly iron and iron-sulfur clusters. Oxygenic photosynthesis appeared between 3.2 and 2.5 billion years ago, as did methane oxidation, nitrogen fixation, nitrification and denitrification. These metabolisms rely on an expanded range of transition metals presumably made available by the build-up of molecular oxygen in soil crusts and marine microbial mats. The appropriation of copper in enzymes before the Great Oxidation Event is particularly important, as copper is key to nitrogen and methane cycling and was later incorporated into numerous aerobic metabolisms. We find that the diversity of metals used in oxidoreductases has increased through time, suggesting that surface redox potential and metal incorporation influenced the evolution of metabolism, biological electron transfer and microbial ecology. © 2017 Macmillan Publishers Limited, part of Springer Nature. All rights reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/105723
Appears in Collections: 气候减缓与适应 科学计划与规划
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作者单位: Environmental Biophysics and Molecular Ecology Program, Department of Marine and Coastal Sciences, Rutgers University, 71 Dudley Road, New Brunswick, NJ, United States; Institute of Marine Science (ISMAR), National Research Council of Italy (CNR), Largo Fiera della Pesca, Ancona, Italy; Earth-Life Science Institute, Tokyo Institute of Technology, 2-12-1-IE-1 Ookayama, Meguro-ku, Tokyo, Japan; Department of Earth and Planetary Sciences, Rutgers University, 610 Taylor Road, Piscataway, New Brunswick, NJ, United States
Recommended Citation:
Moore E.K.,Jelen B.I.,Giovannelli D.,et al. Metal availability and the expanding network of microbial metabolisms in the Archaean eon[J]. Nature Geoscience,2017-01-01,10(9)