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Related Concept Videos

X-ray Diffraction of Biological Samples01:10

X-ray Diffraction of Biological Samples

X-ray diffraction or XRD is an analytical tool that utilizes X-rays to study ordered structures such as crystalline organic and inorganic samples, polycrystalline materials, proteins, carbohydrates, and drugs.
According to Bragg's law, when X-rays strike the sample positioned on a stage, the rays are  scattered by the electron clouds around the sample atoms. The  X-ray diffraction or scattering is caused by constructive interference of the X-ray waves that reflect off the internal crystal...

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Online Size-exclusion and Ion-exchange Chromatography on a SAXS Beamline
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New data analysis for BioSAXS at the ESRF.

Jérôme Kieffer1, Martha Brennich2, Jean Baptiste Florial2

  • 1ESRF - The European Synchrotron, 71 Avenue des Martyrs, 38000 Grenoble, France.

Journal of Synchrotron Radiation
|September 8, 2022
PubMed
Summary
This summary is machine-generated.

The BioSAXS beamline at ESRF now offers enhanced small-angle X-ray scattering (SAXS) analysis with upgraded hardware and new software, FreeSAS and Dahu, for real-time data processing.

Keywords:
BioSAXSautomationbiological small-angle X-ray scatteringhigh brilliancehigh-throughput SAXSonline data analysisonline purificationproteinssize-exclusion chromatographysolution scatteringstructural biology

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Area of Science:

  • Structural biology
  • Biophysical techniques
  • X-ray scattering

Background:

  • The European Synchrotron Radiation Facility (ESRF) underwent a major upgrade, including the Extremely Brilliant Source (EBS).
  • The BioSAXS beamline (BM29) was refurbished with a new wiggler source and an improved detector to handle increased data flux.

Purpose of the Study:

  • To detail the upgrades and new software developed for the BioSAXS beamline.
  • To present the data processing pipelines for various experimental setups.

Main Methods:

  • Implementation of a new wiggler source and larger detector at the BioSAXS beamline.
  • Development of FreeSAS, an open-source software suite for small-angle scattering data analysis.
  • Creation of Dahu, an interface tool for beamline control and data analysis integration.
  • Establishment of data processing pipelines for automated sample changers and inline size-exclusion chromatography.

Main Results:

  • The upgraded BioSAXS beamline provides real-time reduced and pre-processed data to users.
  • FreeSAS offers a comprehensive set of algorithms for BioSAXS data reduction and analysis.
  • Dahu facilitates seamless integration between data analysis and beamline operations.
  • The new pipelines efficiently handle data from diverse experimental configurations.

Conclusions:

  • The refurbished BioSAXS beamline, supported by FreeSAS and Dahu, enhances user capabilities for small-angle X-ray scattering experiments.
  • The implemented data processing strategies optimize data acquisition and analysis efficiency.
  • These advancements contribute to improved structural and dynamic studies of biological macromolecules.