Polar lipid fatty acids, LPS-hydroxy fatty acids, and respiratory quinones of three Geobacter strains, and variation with electron acceptor

  • D. B. HedrickEmail author
  • A. D. Peacock
  • D. R. Lovley
  • T. L. Woodard
  • K. P. Nevin
  • P. E. Long
  • D. C. White
Original Paper


The polar lipid fatty acids, lipopolysaccharide hydroxy-fatty acids, and respiratory quinones of Geobacter metallireducens str. GS-15, Geobacter sulfurreducens str. PCA, and Geobacter bemidjiensis str. Bem are reported. Also, the lipids of G. metallireducens were compared when grown with Fe3+ or nitrate as electron acceptors and G. sulfurreducens with Fe3+ or fumarate. In all experiments, the most abundant polar lipid fatty acids were 14:0, i15:0, 16:1ω7c, 16:1ω5c, and 16:0; lipopolysaccharide hydroxy-fatty acids were dominated by 3oh16:0, 3oh14:0, 9oh16:0, and 10oh16:0; and menaquinone-8 was the most abundant respiratory quinone. Some variation in lipid profiles with strain were observed, but not with electron acceptor.


Geobacter Polar lipid fatty acids Lipopolysaccharide fatty acids Respiratory quinines Lipid analysis 



Lipopolysaccharide hydroxy-fatty acids


Polar lipid fatty acids





This research was supported by the Office of Science of the US Department of Energy, Biological and Environmental Research, grant DE-FG02-04ER63719.


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Copyright information

© Society for Industrial Microbiology 2008

Authors and Affiliations

  • D. B. Hedrick
    • 1
    Email author
  • A. D. Peacock
    • 2
  • D. R. Lovley
    • 3
  • T. L. Woodard
    • 3
  • K. P. Nevin
    • 3
  • P. E. Long
    • 4
  • D. C. White
    • 5
  1. 1.Microbial Insights, Inc.RockfordUSA
  2. 2.Haley & AldrichBostonUSA
  3. 3.Department of MicrobiologyUniversity of MassachusettsAmherstUSA
  4. 4.Pacific Northwest National LaboratoryRichlandUSA
  5. 5.Center for Biomarker AnalysisUniversity of TennesseeKnoxvilleUSA

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