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Unit-cell determination from randomly oriented electron-diffraction patterns.

ABSTRACT: Unit-cell determination is the first step towards the structure solution of an unknown crystal form. Standard procedures for unit-cell determination cannot cope with data collections that consist of single diffraction patterns of multiple crystals, each with an unknown orientation. However, for beam-sensitive nanocrystals these are often the only data that can be obtained. An algorithm for unit-cell determination that uses randomly oriented electron-diffraction patterns with unknown angular relationships is presented here. The algorithm determined the unit cells of mineral, pharmaceutical and protein nanocrystals in orthorhombic high- and low-symmetry space groups, allowing (well oriented) patterns to be indexed.

SUBMITTER: Jiang L

PROVIDER: S-EPMC2703568 | biostudies-literature | 2009 Jul

REPOSITORIES: biostudies-literature

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Unit-cell determination from randomly oriented electron-diffraction patterns.

Jiang Linhua L Georgieva Dilyana D Zandbergen Henny W HW Abrahams Jan Pieter JP

Acta crystallographica. Section D, Biological crystallography 20090620 Pt 7

Unit-cell determination is the first step towards the structure solution of an unknown crystal form. Standard procedures for unit-cell determination cannot cope with data collections that consist of single diffraction patterns of multiple crystals, each with an unknown orientation. However, for beam-sensitive nanocrystals these are often the only data that can be obtained. An algorithm for unit-cell determination that uses randomly oriented electron-diffraction patterns with unknown angular rela ...[more]

PMID: 19564682

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