Library

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Electronic Resource  (7)
  • 1975-1979  (7)
Source
Material
  • Electronic Resource  (7)
Years
Year
Keywords
  • 1
    Electronic Resource
    Electronic Resource
    Synchrotron Radiation Symposium, European Physical Society Fourth General Conference, York, England, 25–29 September 1978 (1979)
    Copenhagen : International Union of Crystallography (IUCr)
    Applied crystallography online 12 (1979), S. 137-138 
    Details
    ISSN: 1600-5767
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Geosciences , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0021889879012024
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    A neutron small-angle scattering study of hen egg-white lysozyme (1976)
    [S.l.] : International Union of Crystallography (IUCr)
    Acta crystallographica 32 (1976), S. 67-74 
    Details
    ISSN: 1600-5724
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: The neutron small-angle scattering of hen egg-white lysozyme chloride in solution has been determined. The scattering density of the solvent and accordingly its contrast with the dissolved particles has been varied by changing the H2O/D2O ratio of the solvent. The zero-angle scattering was derived and it was shown that the square root of the zero-angle intensity is proportional to the contrast. The experimental value of the radius of gyration is R = 13.8 Å, in good agreement with the same quantity calculated on the basis of the crystal structure model of tetragonal lysozyme. The three basic scattering functions were derived from the experimental data and compared with the corresponding scattering pattern calculated from the coordinates of the X-ray structure. The results do not suggest a deviation of the conformation and structure of lysozyme in solution from the crystal structure. The spherical average of the overall dimensions has been separated from the internal structure. The influence of higher multipoles of the shape of the lysozyme molecule on the scattering curve is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0567739476000132
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    The determination of the scattering density distribution of polydisperse solutions by contrast variation: a neutron scattering study of ferritin (1975)
    Copenhagen : International Union of Crystallography (IUCr)
    Applied crystallography online 8 (1975), S. 538-542 
    Details
    ISSN: 1600-5767
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Geosciences , Physics
    Notes: From the dependence of zero-angle scattering of polydisperse solutions on the scattering density of the solvent, information about the mean scattering density and the width of the scattering density distribution of different dissolved molecules can be obtained. This method has been tried with a commercial solution of native ferritin. The root-mean-square deviation of the scattering density was 0.35 × 1010 cm−2 with respect to the mean value of 3.15 × 1010 cm−2. From these data the mean saturation of native ferritin with iron is estimated to about 0.6 and the root-mean-square fluctuation of the iron contents of different ferritin molecules to about 0.4. The neutron scattering curves agree with the results from X-ray small-angle scattering.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0021889875011211
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Small-angle scattering of biological structures (1978)
    Copenhagen : International Union of Crystallography (IUCr)
    Applied crystallography online 11 (1978), S. 325-345 
    Details
    ISSN: 1600-5767
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Geosciences , Physics
    Notes: Small-angle scattering studies on biological structures provide low-resolution models. More detailed models need a more elaborate analysis in order to show their uniqueness. The representation of small-angle scattering of both in Cartesian coordinates and polar coordinates is discussed. The degree of non-uniqueness of structural analysis is best presented in terms of a multipole expansion. Contrast variation leads to the evaluation of the basic scattering functions Jc(κ), Jcs(κ) and Js(κ), which add useful constraints to a model. The experimental aspects of this method in both X-ray and neutron scattering are discussed. Furthermore, isomorphous (or isotopic) replacement of parts of macromolecular structures have been very useful in structure determination of ribosomes. Kinetic investigations of solutions in the subsecond region have been performed so far only for the investigation of H–D exchange with some proteins. Small-angle scattering from fibrous and lamellar systems received a considerable impact from a combined use of X-ray and neutron scattering, as is shown for collagen. Structural changes during active muscle contraction have been investigated both with classical X-ray equipment and with synchrotron radiation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0021889878013473
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Röntgenkleinstwinkelstreuung an Erythrocyten (1978)
    Copenhagen : International Union of Crystallography (IUCr)
    Applied crystallography online 11 (1978), S. 1-5 
    Details
    ISSN: 1600-5767
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Geosciences , Physics
    Notes: The operational range of X-ray small-angle scattering was extended to particles and structures in the μm-range by the construction of a 50 m long scattering device. Erythrocytes were selected as a suitable object for study. They were found to have a radius of gyration of 2.3 ± 0.2 μm, corresponding to a particle diameter of 6.0 ± 0.5 μm. The volume was calculated from Perod's invariant and found to be 67 ± 10 μm3. For the first time, absolute measurements could be done without weakening the primary beam, which allowed the direct determination of the mass of the particle. The mass of the erythrocyte was calculated to be 78 ± 20 pg. In all experiments a slit collimation was used. The divergence of the incident beam was smaller than the halfwidth of the scattering curve by a factor of 2.5. Therefore, the low-angle region of the scattering profile was hardly influenced by distortions due to collimation disregarding the normalization factor.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0021889878012583
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Neutron small-angle scattering of E. coli ribosomes. A contrast variation study (1978)
    Copenhagen : International Union of Crystallography (IUCr)
    Applied crystallography online 11 (1978), S. 487-488 
    Details
    ISSN: 1600-5767
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Geosciences , Physics
    Notes: Neutron small-angle scattering with the contrast-variation method has established that for 50S and 70S ribosomal particles the RNA-protein distribution is such that the RNA component is located predominantly towards the interior and the protein towards the exterior of the particle. In contrast, the 30S subunit is much more homogeneous in its RNA-protein distribution. The shape of the 50S subunit has been determined at low resolution.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0021889878013680
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    A contrast variation study ofEscherichia coli ribosomes reassembled from protonated and deuterated subunits (1978)
    Springer
    European biophysics journal 4 (1978), S. 251-262 
    Details
    ISSN: 1432-1017
    Keywords: Neutron low angle scattering ; Contrast variation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Physics
    Notes: Abstract Neutron low angle scattering studies onE. coli ribosomes reassembled from protonated and deuterated subunits indicate that the association of the two subunits occurs without major distortion of their shape or modification of the distribution of the protein and RNA components.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02426089
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...