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

  • Original Paper
  • Published:
Journal of Industrial Microbiology & Biotechnology

Abstract

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.

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Abbreviations

LPS ohFA:

Lipopolysaccharide hydroxy-fatty acids

PLFA:

Polar lipid fatty acids

MK:

Menaquinone

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Acknowledgments

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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Correspondence to D. B. Hedrick.

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D. C. White: Deceased.

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Hedrick, D.B., Peacock, A.D., Lovley, D.R. et al. Polar lipid fatty acids, LPS-hydroxy fatty acids, and respiratory quinones of three Geobacter strains, and variation with electron acceptor. J Ind Microbiol Biotechnol 36, 205–209 (2009). https://doi.org/10.1007/s10295-008-0486-7

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  • DOI: https://doi.org/10.1007/s10295-008-0486-7

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