FELIX: an algorithm for indexing multiple crystallites in X-ray free-electron laser snapshot diffraction images.

ABSTRACT: A novel algorithm for indexing multiple crystals in snapshot X-ray diffraction images, especially suited for serial crystallography data, is presented. The algorithm, FELIX, utilizes a generalized parametrization of the Rodrigues-Frank space, in which all crystal systems can be represented without singularities. The new algorithm is shown to be capable of indexing more than ten crystals per image in simulations of cubic, tetragonal and monoclinic crystal diffraction patterns. It is also used to index an experimental serial crystallography dataset from lysozyme microcrystals. The increased number of indexed crystals is shown to result in a better signal-to-noise ratio, and fewer images are needed to achieve the same data quality as when indexing one crystal per image. The relative orientati

SUBMITTER: Beyerlein KR 

PROVIDER: S-EPMC5541352 | biostudies-literature | 2017 Aug

REPOSITORIES: biostudies-literature