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Fatty acids, unusual glycophospholipids and DNA analyses of thermophilic bacteria isolated from hot springs

. 2009 Jan ; 13 (1) : 101-9. [epub] 20081107

Language English Country Germany Media print-electronic

Document type Journal Article, Research Support, Non-U.S. Gov't

The composition of fatty acids in 12 strains of the genera Thermus, Meiothermus, Geobacillus and Alicyclobacillus was analyzed by gas chromatography-mass spectrometry. Major FAs found in the profiles included i-15:0, i-17:0, ai-15:0, i-16:0, 16:0, ai-17:0, together with some minor components. Branched FAs were predominant, forming more than 80% of all FAs measured. Fast atom bombardment-mass spectrometry was used for analysis of unusual glycophospholipids, i.e., acylglycosylcardiolipins from genera Geobacillus and Alicyclobacillus and 1-(hydroxy(2-(O-acylglycosyl-oxy)hexadecyloxy)phosphoryloxy) hexadecan-2-yl esters of C15-C17 acids from genera Thermus and Meiothermus. Cloning and preliminary sequence analysis of 16S rDNA showed that these isolates belong to the genera Thermus, Meiothermus, Geobacillus and Alicyclobacillus.

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