Relation between growth temperature of E. coli and phase transition temperatures of its cytoplasmic and outer membranes
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2020, Journal of Biological ChemistryMelting transitions in biomembranes
2019, Biochimica et Biophysica Acta - BiomembranesCitation Excerpt :Haest et al. [11] showed by electron microscopy that the arrangement of proteins in a native bacterial membrane correlates with this transition. Transitions have also been reported for lung surfactant [12-16] and Escherichia coli (E. coli) membranes [17]. However, the importance of these transitions for the function of cells has been little appreciated.
Negative and positive temperature dependence of potassium leak in MscS mutants: Implications for understanding thermosensitive channels
2015, Biochimica et Biophysica Acta - BiomembranesCitation Excerpt :As it has been shown bacteria adjust membrane lipid composition to the growth temperature in such a way that membrane remains in a fluid state during cell growth [52]. In E. coli grown at 37 °C the lipid transition temperature Tm is around 28.5 °C and falls to 10 °C for cells grown at 17 °C [53]. It seems, therefore, unlikely that NTD and PTD phenotypes arise from different membrane fluidity at low and high temperatures of growth.
Cord factor (trehalose 6,6′-dimycolate) forms fully stable and non-permeable lipid bilayers required for a functional outer membrane
2013, Biochimica et Biophysica Acta - BiomembranesTemperature dependence of Cd and Pb binding onto bacterial cells
2009, Chemical GeologyCitation Excerpt :Bacteria typically respond to changes in membrane fluidity by altering the length of the fatty acid chains in their LPS, by changing the number of unsaturated carbons in the fatty acids, and by changing the number of branches in their fatty acid chains (Kumar et al., 2002). At a critical temperature, the outer membrane undergoes a phase transition from a liquid crystalline material to a solid gel (Janoff et al., 1979; Nakayama et al., 1980). Brandenburg and Seydel (1990) used Fourier transform infrared spectroscopy to determine that the LPS extracted from several bacterial species, including one Pseudomonas species, had transition temperatures ranging from 30 °C–40 °C, and that the transition temperature strongly depends on pH, with higher phase transition temperatures occurring under lower pH conditions.
Controlled 2D crystallization of membrane proteins using methyl-β-cyclodextrin
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