Cellular Ecophysiology of Microbe 2016
DOI: 10.1007/978-3-319-20796-4_49-1
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Cis–Trans Isomerase of Unsaturated Fatty Acids: An Immediate Bacterial Adaptive Mechanism to Cope with Emerging Membrane Perturbation Caused by Toxic Hydrocarbons

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Cited by 7 publications
(14 citation statements)
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“…Despite the inconsistent data on the production of cis-9 18:1 from ALA in cow digesta (Lee and Jenkins, 2011;Honkanen et al, 2016), our results would support this pathway in sheep, albeit 13 C-labeled cis-9 18:1 represented only 5.6 ± 0.67 and 3.3 ± 0.24% of 12 C-cis-9 18:1 in control and FO-MFD incubations, respectively (data not shown). High UFA contents in the ruminal environment can be toxic for microorganisms and stimulate the cis to trans isomerization as a protection mechanism (Jenkins et al, 2008;Heipieper et al, 2010). This response would be in line with a replacement of cis intermediates by trans FA in FO-MFD incubations, such as trans-7 and trans-9 18:1, 2 major products of cis-9 18:1 metabolism .…”
Section: Discussionmentioning
confidence: 93%
“…Despite the inconsistent data on the production of cis-9 18:1 from ALA in cow digesta (Lee and Jenkins, 2011;Honkanen et al, 2016), our results would support this pathway in sheep, albeit 13 C-labeled cis-9 18:1 represented only 5.6 ± 0.67 and 3.3 ± 0.24% of 12 C-cis-9 18:1 in control and FO-MFD incubations, respectively (data not shown). High UFA contents in the ruminal environment can be toxic for microorganisms and stimulate the cis to trans isomerization as a protection mechanism (Jenkins et al, 2008;Heipieper et al, 2010). This response would be in line with a replacement of cis intermediates by trans FA in FO-MFD incubations, such as trans-7 and trans-9 18:1, 2 major products of cis-9 18:1 metabolism .…”
Section: Discussionmentioning
confidence: 93%
“…Certain bacterial species belonging to the genera Pseudomonas and Vibrio possess an alternative adaptive mechanism when growth is inhibited: they are able to isomerize unsaturated FA from cis to trans configuration of the double bond without a shift in its position [ 89 , 90 , 91 ]. In Vibrio sp.…”
Section: Fatty Acids As Modulators Of Membrane Propertiesmentioning
confidence: 99%
“…In Pseudomonas , this short-term response results in a denser membrane packing and gives time to the cells for de novo biosynthesis of membrane components necessary for a better and broader adaptation [ 92 ]. Synthesis of trans FA completes within 30 min following exposure to the stress by direct isomerization of the cis isomer, without changes in the position of the double bond [ 89 , 90 ]. In P. putida Idaho exposed to xylene, trans -unsaturated FA were observed after 5 min and maximum amount was observed after 30 min whilst the increase in saturated FA was observed 15 min after exposure to xylene, with maximum content being reached after 2 h [ 93 ].…”
Section: Fatty Acids As Modulators Of Membrane Propertiesmentioning
confidence: 99%
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“…Alterations in the overall degree of fatty acid saturation or in the cis-trans isomerization of unsaturated fatty acids directly depends on toxicity and concentration of organic solvent. Synthesis of trans-fatty acids comes about by direct isomerization of the respective cis-configuration of the double bond without shifting the position [234,[238][239][240][241]. Addition of toluene caused a rapid increase in the ratio of trans-unsaturated fatty acids by ~10 folds in P. putida membrane, immediately within 5 min and resulted in increased membrane rigidity [240,241].…”
Section: Solvent Tolerance Strategies Of Microbes and Their Enzymesmentioning
confidence: 99%