Results 11 to 20 of about 173,038 (236)

Water layer and radiation damage effects on the orientation recovery of proteins in single-particle imaging at an X-ray free-electron laser [PDF]

open access: yesScientific Reports, 2023
The noise caused by sample heterogeneity (including sample solvent) has been identified as one of the determinant factors for a successful X-ray single-particle imaging experiment.
Juncheng E   +8 more
doaj   +2 more sources

Ultrafast Single-Particle Imaging with Intense X-Ray Pulses

open access: yesCHIMIA, 2022
Ultrafast single-particle imaging with intense x-ray pulses from free-electron laser sources provides a new approach for visualizing structure and dynamics on the nanoscale. After a short introduction to the novel free-electron laser sources and methods,
Zhibin Sun   +6 more
doaj   +3 more sources

Evaluation of the performance of classification algorithms for XFEL single-particle imaging data [PDF]

open access: yesIUCrJ, 2019
Using X-ray free-electron lasers (XFELs), it is possible to determine three-dimensional structures of nanoscale particles using single-particle imaging methods.
Yingchen Shi   +12 more
doaj   +2 more sources

A predicted model-aided one-step classification–multireconstruction algorithm for X-ray free-electron laser single-particle imaging [PDF]

open access: yesIUCrJ
Ultrafast, high-intensity X-ray free-electron lasers can perform diffraction imaging of single protein molecules. Various algorithms have been developed to determine the orientation of each single-particle diffraction pattern and reconstruct the 3D ...
Zhichao Jiao, Zhi Geng, Wei Ding
doaj   +2 more sources

Recovery of undamaged electron-density maps in the presence of damage-induced partial coherence in single-particle imaging [PDF]

open access: yesIUCrJ, 2020
Resolving the electronic structure of single biological molecules in their native state was among the primary motivations behind X-ray free-electron lasers. The ultra-short pulses they produce can outrun the atomic motion induced by radiation damage, but
Alexander Kozlov   +5 more
doaj   +2 more sources

Effects of radiation damage and inelastic scattering on single-particle imaging of hydrated proteins with an X-ray Free-Electron Laser [PDF]

open access: yesScientific Reports, 2021
We present a computational case study of X-ray single-particle imaging of hydrated proteins on an example of 2-Nitrogenase–Iron protein covered with water layers of various thickness, using a start-to-end simulation platform and experimental parameters ...
Juncheng E   +7 more
doaj   +2 more sources

A predicted model-aided reconstruction algorithm for X-ray free-electron laser single-particle imaging [PDF]

open access: yesIUCrJ
Ultra-intense, ultra-fast X-ray free-electron lasers (XFELs) enable the imaging of single protein molecules under ambient temperature and pressure.
Zhichao Jiao   +5 more
doaj   +2 more sources

Surface chemistry and morphology in single particle optical imaging

open access: yesNanophotonics, 2017
Biological nanoparticles such as viruses and exosomes are important biomarkers for a range of medical conditions, from infectious diseases to cancer. Biological sensors that detect whole viruses and exosomes with high specificity, yet without additional ...
Ekiz-Kanik Fulya   +4 more
doaj   +2 more sources

Start-to-end simulation of single-particle imaging using ultra-short pulses at the European X-ray Free-Electron Laser

open access: yesIUCrJ, 2017
Single-particle imaging with X-ray free-electron lasers (XFELs) has the potential to provide structural information at atomic resolution for non-crystalline biomolecules.
Carsten Fortmann-Grote   +12 more
doaj   +3 more sources

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