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  • Glycogen Phosphorylase  (1)
  • LUNAR AND PLANETARY EXPLORATION  (1)
  • adsorption  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Partial charge transfer and adsorption at metal electrodes. The underpotential deposition of Hg(I), Tl(I), Bi(III) and Cu(II) on polycrystalline gold electrodes
    Amsterdam : Elsevier
    Electrochimica Acta 39 (1994), S. 1057-1065 
    Details
    ISSN: 0013-4686
    Keywords: adsorption ; gold ; partial charge transfer ; rrde ; underpotential deposition
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0013-4686(94)E0020-Z
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Subunit symmetry of tetrameric phosphorylase a (1976)
    Springer
    European biophysics journal 2 (1976), S. 43-59 
    Details
    ISSN: 1432-1017
    Keywords: Glycogen Phosphorylase ; Subunit Symmetry ; Non-crystallographic Symmetry ; Rotation Function ; Translation Function
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Physics
    Notes: Abstract Native crystallographic data of tetrameric phosphorylase a crystals, space group P21; have been collected photographically to 3 å resolution. These data have been used in Patterson search methods in reciprocal and real space. The tetramers were found to exhibit molecular 222 symmetry. The cross vector between the centres of the two symmetry related tetramers in the unit cell was determined by two different translation function methods. On the basis of these rotation and translation function results a model for the arrangement of monomers within the tetramer and of tetramers in the unit cell is proposed. The 222 symmetry of the tetrameric molecule is found only when high resolution diffraction data are included (i.e. higher than 6 å). At lower resolution other symmetries dominate. Calculations with the proposed model have shown that these spurious symmetries result from the nonspecific overlap of protein-protein and solvent-solvent cross vectors. These results emphasize the importance of high resolution data when noncrystallographic symmetry of globular proteins is studied.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00535652
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    Paper (German National Licenses)
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  • 3
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    High-pressure experiments on magnesian eucrite compositions - Constraints on magmatic processes in the eucrite parent body (1991)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Melting experiments were conducted on synthetic analogs of two magnesian eucrite clasts from howardites, Kapoeta clast rho and Yamato 7308 pigeonite-eucrite clast 1, at 1 atm and 1-kbar pressure at oxygen fugacities in the range of iron-wuestite (IW) to iron-quartz-fayalite (IQF). The compositions of liquids and coexisting minerals (olivine-low-Ca pyroxene-plagioclase spinel) were used to constrain possible melting and crystallization processes in the parent bodies of eucrite basalts. In agreement with previous studies, the experimental results at 1 atm indicate that the olivine-low-Ca pyroxene-plagioclase-spinel-liquid and olivine-low Ca pyroxene-spinel-liquid boundaries are reaction boundaries involving olivine. At 1 kbar, however, the olivine primary-phase volume shrinks, and the reaction relationship involving olivine disappears for both boundaries. The maximum pressure attained in a Vesta-sized eucrite parent body (EPB) is about 1 kbar, and these results provide important constraints on models relating the howardite-eucrite-diogenite (HED) meteorite association through melting and differentiation processes.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Lunar and Planetary Science Conference; Mar 12, 1990 - Mar 16, 1990; Houston, TX; United States
    Format: text
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