Fatty acid and hydroxy acid adaptation in three gram-negative hydrocarbon-degrading bacteria in relation to carbon source
| Autor: | Pierre Metzger, Mohamed Soltani, Claude Largeau |
|---|---|
| Přispěvatelé: | Biogéochimie et écologie des milieux continentaux (Bioemco), Centre National de la Recherche Scientifique (CNRS)-AgroParisTech-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Recherche Agronomique (INRA)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA)-Université Pierre et Marie Curie - Paris 6 (UPMC)-AgroParisTech-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2005 |
| Předmět: |
[SDV]Life Sciences [q-bio]
Membrane lipids Pseudomonas oleovorans Biochemistry 03 medical and health sciences Gram-Negative Bacteria Acinetobacter calcoaceticus 030304 developmental biology chemistry.chemical_classification 0303 health sciences biology 030306 microbiology Alteromonadaceae Fatty Acids Organic Chemistry Fatty acid Cell Biology Marinobacter Lipid Metabolism biology.organism_classification Adaptation Physiological Lipids Hydrocarbons 6. Clean water Biodegradation Environmental Hydrocarbon chemistry [SDE]Environmental Sciences lipids (amino acids peptides and proteins) Hydroxy Acids Bacterial outer membrane Bacteria |
| Zdroj: | Lipids Lipids, Springer Verlag, 2005, 40, pp.1263-1272 Lipids, 2005, 40, pp.1263-1272 |
| ISSN: | 1558-9307 0024-4201 |
| DOI: | 10.1007/s11745-005-1494-x |
| Popis: | The lipids of three gram-negative bacteria, Acineto-bacter calcoaceticus, Marinobacter aquaeolei, and Pseudomonas oleovorans grown on mineral media supplemented with ammonium acetate or hydrocarbons, were isolated, purified, and their structures determined. Three pools of lipids were isolated according to a sequential procedure: unbound lipids extracted with organic solvents, comprising metabolic lipids and the main part of membrane lipids, OH−-labile lipids (mainly ester-bound in the lipopolysaccharides, LPS) and H+-labile lipids (mainly amidebound in the LPS). Unsaturated FA composition gave evidence for an aerobic desaturation pathway for the synthesis of these acids in A. calcoaceticus and M. aquaeolei, a nonclassic route in gram-negative bacteria. Surprisingly, both aerobic and anaerobic pathways are operating in the studied strain of P. oleovorans. The increase of the proportion of saturated FA observed for the strain of P. oleovorans grown on light hydrocarbons would increase the temperature transition of the lipids for maintaining the inner membrane fluidity. An opposite phenomenon occurs in A. calcoaceticus and M. aquaeolei grown on solid or highly viscous C19 hydrocarbons. The increases of FA |
| Databáze: | OpenAIRE |
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