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Acholeplasma laidlawii

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Leif Rilfors – 1st expert on this subject based on the ideXlab platform

  • The effects of hydration and divalent cations on lamellar-nonlamellar phase transitions in membranes and total lipid extracts from Acholeplasma laidlawii A-EF22 – a 2H NMR study.
    , 2008
    Co-Authors: A. E. Niemi, A-s Andersson, Leif Rilfors, Göran Lindblom, Gösta Arvidson

    Abstract:

    The effects of hydration and divalent cations on lamellar-nonlamellar phase transitions in membranes and total lipid extracts from Acholeplasma laidlawii A-EF22 – a 2H NMR study.

  • structures of glucolipids from the membrane of Acholeplasma laidlawii strain a ef22 ii monoacylmonoglucosyldiacylglycerol
    Biochimica et Biophysica Acta, 1994
    Co-Authors: Jon Hauksson, Göran Lindblom, Leif Rilfors

    Abstract:

    Abstract The structure of one glucolipid from the membrane of Acholeplasma laidlawii, strain A-EF22, was determined. This glucolipid is synthesized only when a large fraction of saturated, straight-chain fatty acids are incorporated into the membrane lipids of strain A-EF22. The lipid was studied by 1H- and 13C-NMR spectroscopy. The structure of the lipid is 1,2- diacyl -3-O-[6-O- acyl-(α- d -glucopyranosyl )]-sn- glycerol . The result for this lipid shows that a previously published structure, based on incomplete chemical analyses, was incorrect. The phase equilibria for 1,2- diacyl -3-O-[6-O- acyl-(α- d -glucopyranosyl)] -sn- glycerol and the two dominating lipids in A. laidlawii, monoglucosyldiacylglycerol and diglucosyldiacylglycerol, are discussed and related to the chemical structure of the lipids.

  • structures of glucolipids from the membrane of Acholeplasma laidlawii strain a ef22 i glycerophosphoryldiglucosyldiacylglycerol and monoacylbisglycerophosphoryldiglucosyldiacylglycerol
    Biochimica et Biophysica Acta, 1994
    Co-Authors: Jon Hauksson, Göran Lindblom, Leif Rilfors

    Abstract:

    Abstract The structures of two phosphoglucolipids from the membrane of Acholeplasma laidlawii , strain A-EF22 were determined by high resolution 13 C-, 31 P- and 1 H-NMR. The lipids in question are 1,2-diacyl-3-O-[glycerophosphoryl-6-O-(α- d -glucopyranosyl-(1 → 2)-O-α- d -glucopyranosyl)]-sn-glycerol ( 1 ) and 1,2-diacyl-3-O-[glycerophosphoryl-6-O-(α- d -glucopyranosyl-(1 → 2)-monoacyl-glycerophosphory]-6-O-α- d -glucopyranosyl)]-sn-glycerol (2). Both lipids are thus derivatives of diglucosyldiacylglycerol. Previous reports on these lipids, based on insufficient chemical analyses, showed contradictory structures. A phosphoglycolipid having the structure of 2 has not been described previously.

Alexey A Mouzykantov – 2nd expert on this subject based on the ideXlab platform

  • genome sequences of Acholeplasma laidlawii strains with increased resistance to tetracycline and melittin
    Genome Announcements, 2018
    Co-Authors: E S Medvedeva, Maria N Siniagina, Eugenia A Boulygina, Tatyana Y Malygina, Natalia B Baranova, Mohamed Amine Dramchini, Reshad Akbor Prottoy, Alexey A Mouzykantov

    Abstract:

    ABSTRACT Acholeplasma laidlawii is a well-suited model for studying the molecular basis for adapting mollicutes to environmental conditions. Here, we present the whole-genome sequences of two strains of A. laidlawii with increased resistance to tetracycline and melittin.

  • genome sequences of Acholeplasma laidlawii strains differing in sensitivity to ciprofloxacin
    Genome Announcements, 2017
    Co-Authors: Alexey A Mouzykantov, E S Medvedeva, Maria N Siniagina, Sergey Malanin, Eugenia A Boulygina, Tatyana Y Malygina, Natalia B Baranova

    Abstract:

    ABSTRACT Acholeplasma laidlawii is a well-suited model for study of the molecular basis of the adaptation of mollicutes to environmental conditions. Here we present the whole-genome sequences of four strains of A. laidlawii with differential sensitivity to ciprofloxacin.

  • extracellular membrane vesicles and phytopathogenicity of Acholeplasma laidlawii pg8
    The Scientific World Journal, 2012
    Co-Authors: V M Chernov, O A Chernova, Alexey A Mouzykantov, N B Baranova, O V Gorshkov, Maxim V Trushin, Tatiana N Nesterova, A A Ponomareva

    Abstract:

    For the first time, the phytopathogenicity of extracellular vesicles of Acholeplasma laidlawii PG8 (a ubiquitous mycoplasma that is one of the five common species of cell culture contaminants and is a causative agent for phytomycoplasmoses) in Oryza sativa L. plants was studied. Data on the ability of extracellular vesicles of Acholeplasma laidlawii PG8 to penetrate from the nutrient medium into overground parts of Oryza sativa L. through the root system and to cause alterations in ultrastructural organization of the plants were presented. As a result of the analysis of ultrathin leaf sections of plants grown in medium with A. laidlawii PG8 vesicles, we detected significant changes in tissue ultrastructure characteristic to oxidative stress in plants as well as their cultivation along with bacterial cells. The presence of nucleotide sequences of some mycoplasma genes within extracellular vesicles of Acholeplasma laidlawii PG8 allowed a possibility to use PCR (with the following sequencing) to perform differential detection of cells and bacterial vesicles in samples under study. The obtained data may suggest the ability of extracellular vesicles of the mycoplasma to display in plants the features of infection from the viewpoint of virulence criteria—invasivity, infectivity—and toxigenicity—and to favor to bacterial phytopathogenicity.

Göran Lindblom – 3rd expert on this subject based on the ideXlab platform

  • The effects of hydration and divalent cations on lamellar-nonlamellar phase transitions in membranes and total lipid extracts from Acholeplasma laidlawii A-EF22 – a 2H NMR study.
    , 2008
    Co-Authors: A. E. Niemi, A-s Andersson, Leif Rilfors, Göran Lindblom, Gösta Arvidson

    Abstract:

    The effects of hydration and divalent cations on lamellar-nonlamellar phase transitions in membranes and total lipid extracts from Acholeplasma laidlawii A-EF22 – a 2H NMR study.

  • structures of glucolipids from the membrane of Acholeplasma laidlawii strain a ef22 ii monoacylmonoglucosyldiacylglycerol
    Biochimica et Biophysica Acta, 1994
    Co-Authors: Jon Hauksson, Göran Lindblom, Leif Rilfors

    Abstract:

    Abstract The structure of one glucolipid from the membrane of Acholeplasma laidlawii, strain A-EF22, was determined. This glucolipid is synthesized only when a large fraction of saturated, straight-chain fatty acids are incorporated into the membrane lipids of strain A-EF22. The lipid was studied by 1H- and 13C-NMR spectroscopy. The structure of the lipid is 1,2- diacyl -3-O-[6-O- acyl-(α- d -glucopyranosyl )]-sn- glycerol . The result for this lipid shows that a previously published structure, based on incomplete chemical analyses, was incorrect. The phase equilibria for 1,2- diacyl -3-O-[6-O- acyl-(α- d -glucopyranosyl)] -sn- glycerol and the two dominating lipids in A. laidlawii, monoglucosyldiacylglycerol and diglucosyldiacylglycerol, are discussed and related to the chemical structure of the lipids.

  • structures of glucolipids from the membrane of Acholeplasma laidlawii strain a ef22 i glycerophosphoryldiglucosyldiacylglycerol and monoacylbisglycerophosphoryldiglucosyldiacylglycerol
    Biochimica et Biophysica Acta, 1994
    Co-Authors: Jon Hauksson, Göran Lindblom, Leif Rilfors

    Abstract:

    Abstract The structures of two phosphoglucolipids from the membrane of Acholeplasma laidlawii , strain A-EF22 were determined by high resolution 13 C-, 31 P- and 1 H-NMR. The lipids in question are 1,2-diacyl-3-O-[glycerophosphoryl-6-O-(α- d -glucopyranosyl-(1 → 2)-O-α- d -glucopyranosyl)]-sn-glycerol ( 1 ) and 1,2-diacyl-3-O-[glycerophosphoryl-6-O-(α- d -glucopyranosyl-(1 → 2)-monoacyl-glycerophosphory]-6-O-α- d -glucopyranosyl)]-sn-glycerol (2). Both lipids are thus derivatives of diglucosyldiacylglycerol. Previous reports on these lipids, based on insufficient chemical analyses, showed contradictory structures. A phosphoglycolipid having the structure of 2 has not been described previously.