Indentification and localization of the fatty acids in Haemophilus parainfluenzae.

Journal of Bacteriology
D C White, R H Cox

Abstract

Haemophilus parainfluenzae was capable of synthesizing 22 fatty acids. These fatty acids were equivalent to 4% of the bacterial dry weight. These fatty acids were localized in the membrane-wall complex, which contained the respiratory pigments, the quinone, and the phospholipids. The fatty acids which could be extracted with organic solvents comprised 86% of the total fatty acids of the cell. These fatty acids were distributed as 98% in the phospholipids and 1.9% in the neutral lipids, of which 0.5% were free fatty acids. Palmitic, palmitoleic, oleic, and vaccenic acids comprised 72% of the total fatty acids and were found almost exclusively in the phospholipids. The phospholipids also contained the cyclopropane fatty acids. The neutral lipids contained significant proportions of the odd-numbered branched and straight-chain fatty acids. The principal free fatty acids were n-dodecanoic and pentadecenoic acids. The nonextractable wall complex contained 14% of the total fatty acids. These wall fatty acids were rendered soluble only after saponification. The wall fraction contained all of the beta-hydroxymyristic acid and most of the myristoleic and pentadecenoic acids. The significance of the distribution of fatty acids between no...Continue Reading

Citations

Jan 1, 1984·The Journal of Membrane Biology·M E Kahn, H O Smith
Jan 1, 1974·Antonie van Leeuwenhoek·B J WilkinsonP J White
Jan 1, 1973·Archiv für Mikrobiologie·A D Agate, W Vishniac
Oct 1, 1970·Journal of Bacteriology·M R Morman, D C White
Oct 1, 1970·Journal of Bacteriology·C W MossJ D Thayer
May 1, 1970·Journal of Bacteriology·A N Tucker, D C White
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Dec 5, 1967·Biochimica Et Biophysica Acta·J E Cronan
Oct 1, 1971·Journal of Virology·W E Bradley, L Astrachan
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Dec 1, 1972·Journal of Bacteriology·B J WilkinsonD C White
Jan 1, 1970·Journal of Bacteriology·V RizzaD C White
May 1, 1970·Archives of Biochemistry and Biophysics·M TetasJ Molnar

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