globalchange  > 影响、适应和脆弱性
DOI: 10.1111/gbi.12202
Scopus记录号: 2-s2.0-84979746814
论文题名:
Life's utilization of B vitamins on early Earth
作者: Monteverde D.R.; Gómez-Consarnau L.; Suffridge C.; Sañudo-Wilhelmy S.A.
刊名: Geobiology
ISSN: 1472-4677
EISSN: 1472-4669
出版年: 2017
卷: 15, 期:1
起始页码: 3
结束页码: 18
语种: 英语
Scopus关键词: biochemistry ; carbon fixation ; early Earth ; enzyme ; enzyme activity ; metabolism ; methanogenesis ; reduction ; scavenging (chemistry) ; sulfate ; symbiosis ; vitamin ; vitamin B complex ; biogenesis ; coenzyme ; evolution ; metabolism ; Biological Evolution ; Coenzymes ; Metabolic Networks and Pathways ; Origin of Life ; Vitamin B Complex
Scopus学科分类: Earth and Planetary Sciences: General Earth and Planetary Sciences ; Environmental Science: General Environmental Science ; Agricultural and Biological Sciences: Ecology, Evolution, Behavior and Systematic
英文摘要: Coenzymes are essential across all domains of life. B vitamins (B1-thiamin, B2-riboflavin, B3-niacin, B5-pantothenate, B6-pyridoxine, B7-biotin, and B12-cobalamin) represent the largest class of coenzymes, which participate in a diverse set of reactions including C1-rearrangements, DNA repair, electron transfer, and fatty acid synthesis. B vitamin structures range from simple to complex heterocycles, yet, despite this complexity, multiple lines of evidence exist for their ancient origins including abiotic synthesis under putative early Earth conditions and/or meteorite transport. Thus, some of these critical coenzymes likely preceded life on Earth. Some modern organisms can synthesize their own B vitamins de novo while others must either scavenge them from the environment or establish a symbiotic relationship with a B vitamin producer. B vitamin requirements are widespread in some of the most ancient metabolisms including all six carbon fixation pathways, sulfate reduction, sulfur disproportionation, methanogenesis, acetogenesis, and photosynthesis. Understanding modern metabolic B vitamin requirements is critical for understanding the evolutionary conditions of ancient metabolisms as well as the biogeochemical cycling of critical elements such as S, C, and O. © 2016 John Wiley & Sons Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/85085
Appears in Collections:影响、适应和脆弱性

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作者单位: Department of Earth Sciences, University of Southern California, Los Angeles, CA, United States; Department of Biological Sciences, University of Southern California, Los Angeles, CA, United States

Recommended Citation:
Monteverde D.R.,Gómez-Consarnau L.,Suffridge C.,et al. Life's utilization of B vitamins on early Earth[J]. Geobiology,2017-01-01,15(1)
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