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

TitlePolar lipid fatty acids, LPS-hydroxy fatty acids, and respiratory quinones of three Geobacter strains, and variation with electron acceptor.
Publication TypeJournal Article
Year of Publication2009
AuthorsHedrick DB, Peacock AD, Lovley DR, Woodard TL, Nevin KP, Long PE, White DC
JournalJ Ind Microbiol Biotechnol
Volume36
Issue2
Pagination205-9
Date Published2009 Feb
ISSN1476-5535
KeywordsCulture Media, Electrons, Environmental Microbiology, Fatty Acids, Ferrous Compounds, Geobacter, Lipids, Lipopolysaccharides, Nitrates, Quinones, Vitamin K 2
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 Fe(3+) or nitrate as electron acceptors and G. sulfurreducens with Fe(3+) or fumarate. In all experiments, the most abundant polar lipid fatty acids were 14:0, i15:0, 16:1 omega 7c, 16:1 omega 5c, 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.

DOI10.1007/s10295-008-0486-7
Alternate JournalJ. Ind. Microbiol. Biotechnol.
PubMed ID18846396