Mycolic Acid Composition and Thermally Adaptative Changes in Nocardia asteroides

摘要: The nocardomycolic acid compositions of extractable and the cell wall-bound lipids from five strains Nocardia asteroides (A-23007, A-23094, B-23006, B-23095, IFO 3384) were compared by using gas chromatography-mass spectrometry. molecular species composition mycolic differed significantly among N. asteroides. A-23007 strain possessed shortest species, centering at C(44(46)), A-23094 IFO-3384 followed, each C(52). B-23006 B-23095 longest C(56) or C(54), thus indicating that accommodate a heterogeneous group in respect to carbon numbers acids. doublebond isomers acids representative 3384 fully separated analyzed argentation thin-layer chromatography, followed reference (IFO up four double bonds on straight chain ranging C(46) C(60). All C(14) alkyl branch C-2. more highly unsaturated subclasses consisted longer-chain Marked changes induced altering growth temperature 3384. cells grown higher (50 degrees C) contained saturated acids, whereas those lower (17 had polyunsaturated (up tetraenoic) although significant difference length was not detected. These degree unsaturation occurred shortly after shifting 17 50 C logarithmic stages bacterial growth, can adapt environmental structure walls.