Polar lipid fatty acids,LPS-hydroxy fatty acids,and respiratory quinones of three <Emphasis Type="Italic">Geobacter</Emphasis> strains,and variation with electron acceptor |
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| Authors: | D B Hedrick A D Peacock D R Lovley T L Woodard K P Nevin P E Long D C White |
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| Institution: | (1) Microbial Insights, Inc., 2340 Stock Creek Blvd., Rockford, TN, USA;(2) Haley & Aldrich, 465 Medford St., Ste. 2200, Boston, MA, USA;(3) Department of Microbiology, University of Massachusetts, 159 N. Pleasant St., Amherst, MA, USA;(4) Pacific Northwest National Laboratory, Richland, WA, USA;(5) Center for Biomarker Analysis, University of Tennessee, 10515 Research Dr., Ste. 300, Knoxville, TN, USA |
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| 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.
D. C. White: Deceased. |
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| Keywords: | Geobacter Polar lipid fatty acids Lipopolysaccharide fatty acids Respiratory quinines Lipid analysis |
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