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Macromolecular phasing using diffraction from multiple crystal forms

Macromolecular phasing using diffraction from multiple crystal forms A phasing algorithm for macromolecular crystallography is proposed that utilizes diffraction data from multiple crystal forms – crystals of the same molecule with different unit‐cell packings (different unit‐cell parameters or space‐group symmetries). The approach is based on the method of iterated projections, starting with no initial phase information. The practicality of the method is demonstrated by simulation using known structures that exist in multiple crystal forms, assuming some information on the molecular envelope and positional relationships between the molecules in the different unit cells. With incorporation of new or existing methods for determination of these parameters, the approach has potential as a method for ab initio phasing. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Acta Crystallographica Section A: Foundations and Advances Wiley

Macromolecular phasing using diffraction from multiple crystal forms

17 pages

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References (95)

Publisher
Wiley
Copyright
Copyright © 2021 Wiley Subscription Services, Inc., A Wiley Company
ISSN
0108-7673
eISSN
1600-5724
DOI
10.1107/S2053273320013650
Publisher site
See Article on Publisher Site

Abstract

A phasing algorithm for macromolecular crystallography is proposed that utilizes diffraction data from multiple crystal forms – crystals of the same molecule with different unit‐cell packings (different unit‐cell parameters or space‐group symmetries). The approach is based on the method of iterated projections, starting with no initial phase information. The practicality of the method is demonstrated by simulation using known structures that exist in multiple crystal forms, assuming some information on the molecular envelope and positional relationships between the molecules in the different unit cells. With incorporation of new or existing methods for determination of these parameters, the approach has potential as a method for ab initio phasing.

Journal

Acta Crystallographica Section A: Foundations and AdvancesWiley

Published: Jan 1, 2021

Keywords: ; ; ; ;

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