Berberich TB, Molodtsov SL, Kurta RP. A workflow for single-particle structure determination via iterative phasing of rotational invariants in fluctuation X-ray scattering.
J Appl Crystallogr 2024;
57:324-343. [PMID:
38596737 PMCID:
PMC11001396 DOI:
10.1107/s1600576724000992]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Accepted: 01/29/2024] [Indexed: 04/11/2024] Open
Abstract
Fluctuation X-ray scattering (FXS) offers a complementary approach for nano- and bioparticle imaging with an X-ray free-electron laser (XFEL), by extracting structural information from correlations in scattered XFEL pulses. Here a workflow is presented for single-particle structure determination using FXS. The workflow includes procedures for extracting the rotational invariants from FXS patterns, performing structure reconstructions via iterative phasing of the invariants, and aligning and averaging multiple reconstructions. The reconstruction pipeline is implemented in the open-source software xFrame and its functionality is demonstrated on several simulated structures.
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