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On Soulé-Porod plots of protein X-ray scattering data (1977)

Murthy, N. S. ; Knox, J. R.

Copenhagen : International Union of Crystallography (IUCr)

Applied crystallography online 10 (1977), S. 137-140

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ISSN: 1600-5767

Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001

Topics: Geosciences , Physics

Notes: It is shown that inhomogeneous electron density distribution as represented either by a spherical model containing smaller spheres or by a sphere with radially periodic density does not produce positive slope in Soulé–Porod plots (Ih4 versus h4) of protein small-angle scattering data. It is found that the introduction of small particles into the scattering population can produce the zero or positive slope commonly seen. It is also shown that intersubunit interference is able to account for the low 2&thgr; minimum or dip often observed in Ih4 vs h4 plots of the scattering from multisubunit proteins.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1107/S0021889877013120

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