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  • Analytical Chemistry and Spectroscopy  (3)
  • Dimorphism  (1)
  • 1985-1989  (4)
  • 1965-1969
  • 1
    Electronic Resource
    Electronic Resource
    Cell wall composition of the yeast and mycelial forms of Yarrowia lipolytica (1986)
    Springer
    Archives of microbiology 144 (1986), S. 124-130 
    Details
    ISSN: 1432-072X
    Keywords: Dimorphism ; Yarrowia lipolytica ; Cell wall composition
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The cell walls of the yeast and mycelial forms of Yarrowia lipolytica were isolated and purified. Electron microscopy studies showed no differences between both types of cell walls. Chemical analysis revealed that the yeast cell wall contained 70% neutral carbohydrate, 7% amino sugars, 15% protein, 5% lipids and 0.8% phosphorus. Mycelial cell walls contained 70% carbohydrate, 14% aminosugars, 6% protein, 5% lipids and 0.6% phosphorus. Three polysaccharides: β-glucan, mannan and chitin were detected. Proteins were solubilized from both cell wall fractions and separated by polyacrylamide gel electrophoresis. About 50 protein bands were detected, four of them corresponding to glycoproteins. The cell walls of the yeast and mycelial forms of Y. lipolytica were qualitatively similar and only quantitative differences were found.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00414721
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  • 2
    Electronic Resource
    Electronic Resource
    The antibiotic complex of retamycins: A fast atom bombardment mass spectrometric study (1989)
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 18 (1989), S. 553-557 
    Details
    ISSN: 0887-6134
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Fast atom bombardment (FAB) mass spectrometry is, for the first time, successfully applied to the underivatized anthracycline antibiotics retamycins E1 and E2, using bis-(2-hydroxyethyl)sulphide as the matrix compound. The spectra are characterized by abundant protonated molecular ions and also by a number of sequence ions, which can be easily rationalized in terms of the carbohydrate sequence in the molecules. The relative abundance of these ions seems to depend on the functionalities close to the glycosidic oxygen, and also on their stereochemical relationship. Structural results are also confirmed by the analysis of the FAB mass spectra of the acetyl derivatives.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bms.1200180807
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  • 3
    Electronic Resource
    Electronic Resource
    Solid-state vibrational spectroscopy of disordered crystals. IIFor Part I, see Ref. 4. - Phonon spectra and structure of crystalline thioanisole (1988)
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 19 (1988), S. 161-166 
    Details
    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The phonon spectra of thioanisole have been measured in a temperature range from the freezing point to 77 K, in order to ascertain if disordered crystalline phases are obtained as in other sulphur-containing molecular crystals studied. All the Davidov splitting components have been assigned on the basis of a correlation diagram which has been constructed assuming a unit cell isomorphous with a Cmc21 orthorhombic crystal.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jrs.1250190304
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  • 4
    Electronic Resource
    Electronic Resource
    Phonon spectra and unit cell analysis of 2-cyanothiophene (1988)
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 19 (1988), S. 423-428 
    Details
    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Vibrational spectra of 2-cyanothiophene in the solid state reveal that the crystals are ordered below the freezing point and have an orthorhombic C2v unit cell. Intermolecular forces between the two molecules occupying the Bravais unit are not strong enough to promote the separation of all the Davidov doublets of the phonon states.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jrs.1250190609
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