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Solving structure with sparse, randomly-oriented x-ray data

Journal Article · · Optics Express
DOI:https://doi.org/10.1364/oe.20.013129· OSTI ID:1627125
 [1];  [2];  [2];  [2];  [3]
  1. Cornell Univ., Ithaca, NY (United States). Lab. of Atomic and Solid State Physics; DOE/OSTI
  2. Cornell Univ., Ithaca, NY (United States). Lab. of Atomic and Solid State Physics
  3. Cornell Univ., Ithaca, NY (United States). Lab. of Atomic and Solid State Physics; Cornell Univ., Ithaca, NY (United States). Cornell High Energy Synchrotron Source (CHESS)
Single-particle imaging experiments of biomolecules at x-ray free-electron lasers (XFELs) require processing hundreds of thousands of images that contain very few x-rays. Each low-fluence image of the diffraction pattern is produced by a single, randomly oriented particle, such as a protein. We demonstrate the feasibility of recovering structural information at these extremes using low-fluence images of a randomly oriented 2D x-ray mask. Successful reconstruction is obtained with images averaging only 2.5 photons per frame, where it seems doubtful there could be information about the state of rotation, let alone the image contrast. This is accomplished with an expectation maximization algorithm that processes the low-fluence data in aggregate, and without any prior knowledge of the object or its orientation. The versatility of the method promises, more generally, to redefine what measurement scenarios can provide useful signal.
Research Organization:
Cornell Univ., Ithaca, NY (United States); SLAC National Accelerator Laboratory, Menlo Park, CA (United States). Linac Coherent Light Source (LCLS)
Sponsoring Organization:
Keck Foundation; National Institute of General Medical Sciences (NIGMS); National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-76SF00515; FG02-97ER62443; SC0004079; SC0005827
OSTI ID:
1627125
Journal Information:
Optics Express, Journal Name: Optics Express Journal Issue: 12 Vol. 20; ISSN 1094-4087; ISSN OPEXFF
Publisher:
Optical Society of America (OSA)Copyright Statement
Country of Publication:
United States
Language:
English

References (20)

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Low-flux measurements with Cornell's LCLS integrating pixel array detector journal November 2011
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Reconstruction algorithm for single-particle diffraction imaging experiments journal August 2009
A reconstruction algorithm for single-particle diffraction imaging experiments journal August 2009
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Noise Limits on Reconstructing Diffraction Signals From Random Tomographs journal October 2009
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Cryptotomography: Reconstructing 3D Fourier Intensities from Randomly Oriented Single-Shot Diffraction Patterns text January 2010

Cited By (14)

3D diffractive imaging of nanoparticle ensembles using an x-ray laser journal December 2020
Single-particle structure determination by X-ray free-electron lasers: Possibilities and challenges journal July 2015
Coherent and transient states studied with extreme ultraviolet and X-ray free electron lasers: present and future prospects journal April 2015
X-ray lasers for structural and dynamic biology journal September 2012
Optimal mapping of x-ray laser diffraction patterns into three dimensions using routing algorithms journal October 2013
Dragonfly : an implementation of the expand–maximize–compress algorithm for single-particle imaging journal June 2016
Single-molecule imaging with longer X-ray laser pulses journal October 2015
Solving protein structure from sparse serial microcrystal diffraction data at a storage-ring synchrotron source journal July 2018
Signal-to-noise, spatial resolution and information capacity of coherent diffraction imaging journal September 2018
Experimental 3D coherent diffractive imaging from photon-sparse random projections journal March 2019
Gaussian mixture model for coarse-grained modeling from XFEL journal January 2018
Low-signal limit of X-ray single particle diffractive imaging journal January 2019
Experimental 3D coherent diffractive imaging from photon-sparse random projections text January 2019
Low-signal limit of X-ray single particle diffractive imaging text January 2019


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