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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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Structural Studies of Macromolecules in Solution using Small Angle X-Ray Scattering
07:19

Structural Studies of Macromolecules in Solution using Small Angle X-Ray Scattering

Published on: November 5, 2018

Sample preparation, data collection, and preliminary data analysis in biomolecular solution X-ray scattering.

Alexander Grishaev1

  • 1Laboratory of Chemical Physics, National Institutes of Health, NIDDK, Bethesda, Maryland.

Current Protocols in Protein Science
|November 16, 2012
PubMed
Summary

Solution X-ray scattering (SAXS) is a powerful tool for studying biological macromolecules. This guide details potential pitfalls in SAXS data collection and analysis to ensure reliable structural modeling.

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Analysis of SEC-SAXS data via EFA deconvolution and Scatter

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Related Experiment Videos

Last Updated: May 16, 2026

Structural Studies of Macromolecules in Solution using Small Angle X-Ray Scattering
07:19

Structural Studies of Macromolecules in Solution using Small Angle X-Ray Scattering

Published on: November 5, 2018

Biochemical and Structural Characterization of the Carbohydrate Transport Substrate-binding-protein SP0092
08:53

Biochemical and Structural Characterization of the Carbohydrate Transport Substrate-binding-protein SP0092

Published on: October 2, 2017

Analysis of SEC-SAXS data via EFA deconvolution and Scatter
10:59

Analysis of SEC-SAXS data via EFA deconvolution and Scatter

Published on: January 28, 2021

Area of Science:

  • Biophysics
  • Structural Biology
  • Biochemistry

Background:

  • Solution X-ray scattering (SAXS) is increasingly vital for macromolecular structural investigation.
  • SAXS offers ease of data collection but requires sophisticated analysis.
  • Potential challenges arise from sample purity, monodispersity, and data interpretation.

Purpose of the Study:

  • To highlight experimental aspects of SAXS data collection and processing.
  • To identify common artifacts and errors in SAXS measurements.
  • To empower researchers with confidence in SAXS data before structural modeling.

Main Methods:

  • Detailed discussion of sample preparation for SAXS experiments.
  • Guidance on optimal SAXS data collection procedures.
  • Explanation of data processing and preliminary analysis steps.

Main Results:

  • Identification of critical factors that can compromise SAXS data quality.
  • Emphasis on artifact detection and avoidance in SAXS measurements.
  • Framework for ensuring data integrity for subsequent structural modeling.

Conclusions:

  • Careful attention to experimental details and data analysis is crucial for SAXS.
  • Understanding potential errors prevents misleading structural interpretations.
  • This unit provides a comprehensive overview of SAXS pitfalls for reliable results.