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Genome and proteome of long-chain alkane degrading Geobacillus thermodenitrificans NG80-2 isolated from a deep-subsurface oil reservoir.

Authors
  • Feng, Lu
  • Wang, Wei
  • Cheng, Jiansong
  • Ren, Yi
  • Zhao, Guang
  • Gao, Chunxu
  • Tang, Yun
  • Liu, Xueqian
  • Han, Weiqing
  • Peng, Xia
  • Liu, Rulin
  • Wang, Lei
Type
Published Article
Journal
Proceedings of the National Academy of Sciences of the United States of America
Publication Date
Mar 27, 2007
Volume
104
Issue
13
Pages
5602–5607
Identifiers
PMID: 17372208
Source
Medline
License
Unknown

Abstract

The complete genome sequence of Geobacillus thermodenitrificans NG80-2, a thermophilic bacillus isolated from a deep oil reservoir in Northern China, consists of a 3,550,319-bp chromosome and a 57,693-bp plasmid. The genome reveals that NG80-2 is well equipped for adaptation into a wide variety of environmental niches, including oil reservoirs, by possessing genes for utilization of a broad range of energy sources, genes encoding various transporters for efficient nutrient uptake and detoxification, and genes for a flexible respiration system including an aerobic branch comprising five terminal oxidases and an anaerobic branch comprising a complete denitrification pathway for quick response to dissolved oxygen fluctuation. The identification of a nitrous oxide reductase gene has not been previously described in Gram-positive bacteria. The proteome further reveals the presence of a long-chain alkane degradation pathway; and the function of the key enzyme in the pathway, the long-chain alkane monooxygenase LadA, is confirmed by in vivo and in vitro experiments. The thermophilic soluble monomeric LadA is an ideal candidate for treatment of environmental oil pollutions and biosynthesis of complex molecules.

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