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  • 1
    Electronic Resource
    Electronic Resource
    Crystallization and preliminary X-ray analysis of a Y13S mutant of Spo0F from Bacillus subtilis (1996)
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 52 (1996), S. 589-590 
    Details
    ISSN: 1399-0047
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: Spo0F, a member of a superfamily of bacterial response regulatory proteins, is crucial to the regulation of sporulation in Bacillus subtilis. As there were difficulties in reproducing crystals of wild-type Spo0F, we report here the crystallization and preliminary studies of a mutant, Y13S protein, which gave well diffracting reproducible crystals. The crystals of the mutant obtained by the hanging-drop method belong to the tetragonal space group P41212 (P43212) a = b = 105.1, c = 85.9 Å. Diffraction data were collected at 2.8 Å at the laboratory source and subsequently 2.05. Å data were collected upon flash freezing the crystal at the Stanford Synchrotron Radiation Laboratory. This mutant participates in the phosphorelay in a similar manner to the wild-type protein. The presence of divalent cations are essential for wild-type phosphorylation and the present mutant crystal form is obtained in the presence of calcium.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0907444995016520
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  • 2
    Electronic Resource
    Electronic Resource
    Crystal structure of a monoclinic form of dihydropteridine reductase from rat liver (1994)
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 50 (1994), S. 884-888 
    Details
    ISSN: 1399-0047
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: A binary complex of dihydropteridine reductase and NADH crystallizes in the space group C2, with a = 222.2, b = 46.5, c = 95.3 Å and β = 101.1°. There are two dimers in the asymmetric unit. The structure was solved by molecular-replacement techniques and refined with 2.6 Å data to a crystallographic R factor of 16.8%. Each dimer has twofold non-crystallographic symmetry and the four individual monomers in the asymmetric unit have the same overall molecular conformation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0907444994005718
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  • 3
    Electronic Resource
    Electronic Resource
    Generalized temperature-factor formulation with application to cadmium selenide and other wurtzites (1978)
    [S.l.] : International Union of Crystallography (IUCr)
    Acta crystallographica 34 (1978), S. 130-136 
    Details
    ISSN: 1600-5724
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: The generalized temperature factor is formulated within the framework of the one-particle potential in terms of functions derived from the harmonic functions of Stewart. This formulation is then applied to the wurtzite structure and projection analysis is used to eliminate one component of the potential. Inclusion of the generalized temperature factor in the structure-factor expression for wurtzitc leads to the appearance of harmonically forbidden reflections and the loss of equivalence of non-symmetry-related reflections which occur at the same Bragg angle. The results of a room-temperature X-ray experiment with cadmium selenide are interpreted within the above model to yield cubic anharmonic parameters |β332| = |β337| = |β313| = (0.13 ± 0.01) × 10-12 erg A-3. These are used to estimate the anharmonic effect on the position parameter u. Some general conclusions are drawn regarding the possibility of observing similar effects in other wurtzite structures.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0567739478000248
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  • 4
    Electronic Resource
    Electronic Resource
    Structure of pentacarbonyl(cycloheptatrienyl)(cyclopentadienyl)dimolybdenum(Mo–Mo) (1988)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 44 (1988), S. 2025-2027 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108270188009643
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