Comparison of calculated and observed dynamical diffraction from purple membrane: implications

Publication Type

Journal Article

Year of Publication

1996

Refereed Designation

Refereed

Journal

Ultramicroscopy

Volume

65

Pagination

101-107

Date Published

Sep

ISSN

0304-3991

Accession Number

ISI:A1996VU97100011

Citation Key

89

Number

1-2

Keywords

Crystallography, CRYSTALS, elastic scattering theory, electron diffraction, ELECTRON-DIFFRACTION, PATTERNS

Abstract

We show that the magnitude and direction of the observed differences in intensities of Friedel-related reflections in electron diffraction patterns from two-dimensional crystals of bacteriorhodopsin (purple membrane) an accounted for by dynamical scattering as well as by Ewald sphere curvature. We suggest how the observed Friedel differences might be used to refine structure factor phases.