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Journal Article

An advanced workflow for single-particle imaging with the limited data at an X-ray free-electron laser

MPS-Authors
/persons/resource/persons194656

Paulraj,  L. X.
Center for Free Electron Laser Science (CFEL), DESY;
International Max Planck Research School for Ultrafast Imaging & Structural Dynamics (IMPRS-UFAST), Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
SLAC National Accelerator Laborator;

External Ressource
Fulltext (public)

it5022.pdf
(Publisher version), 2MB

Supplementary Material (public)

suppl.zip
(Supplementary material), 11MB

Citation

Assalauova, D., Kim, Y. Y., Bobkov, S., Khubbutdinov, R., Rose, M., Alvarez, R., et al. (2020). An advanced workflow for single-particle imaging with the limited data at an X-ray free-electron laser. IUCrJ, 7(6). doi:10.1107/S2052252520012798.


Cite as: http://hdl.handle.net/21.11116/0000-0007-45A2-4
Abstract
An improved analysis for single-particle imaging (SPI) experiments, using the limited data, is presented here. Results are based on a study of bacteriophage PR772 performed at the Atomic, Molecular and Optical Science instrument at the Linac Coherent Light Source as part of the SPI initiative. Existing methods were modified to cope with the shortcomings of the experimental data: inaccessibility of information from half of the detector and a small fraction of single hits. The general SPI analysis workflow was upgraded with the expectation-maximization based classification of diffraction patterns and mode decomposition on the final virus-structure determination step. The presented processing pipeline allowed us to determine the 3D structure of bacteriophage PR772 without symmetry constraints with a spatial resolution of 6.9 nm. The obtained resolution was limited by the scattering intensity during the experiment and the relatively small number of single hits.