International
Tables for Crystallography Volume F Crystallography of biological macromolecules Edited by M. G. Rossmann and E. Arnold © International Union of Crystallography 2006 |
International Tables for Crystallography (2006). Vol. F. ch. 19.5, p. 445
Section 19.5.3.4. Fourier–Bessel syntheses
aWhistler Center for Carbohydrate Research, Purdue University, West Lafayette, IN 47907, USA, and bDepartment of Molecular Biology, Vanderbilt University, Nashville, TN 37235, USA |
Electron densities may be calculated for crystalline fibres, as they are in crystallography, using Fourier syntheses with coefficients determined for the crystalline reflections.
For noncrystalline fibres, it is more convenient to use Fourier–Bessel syntheses: the electron density ρ at point is
where