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X-ray Crystallography

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Related Experiment Video

Updated: Apr 28, 2026

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

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

Published on: November 5, 2018

Using small angle solution scattering data in Xplor-NIH structure calculations.

Charles D Schwieters¹, G Marius Clore²

¹Division of Computational Bioscience, Center for Information Technology, National Institutes of Health, Building 12A, Bethesda, MD 20892-5624, United States.

Progress in Nuclear Magnetic Resonance Spectroscopy

|June 14, 2014

Summary

This summary is machine-generated.

Small and wide angle X-ray and neutron scattering data aid biomolecular structure calculation with Xplor-NIH. Scattering data provides structural restraints for proteins and nucleic acids, including large molecules and dynamic motions.

Keywords:

NMR restraints SANS SAXS Structure determination WAXS

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Area of Science:

Biophysics
Structural Biology
Biochemistry

Background:

Biomolecular structure determination is crucial for understanding biological function.
Integrating multiple biophysical techniques can improve structural accuracy.
Nuclear Magnetic Resonance (NMR) data is a common input for structure calculations.

Purpose of the Study:

To describe the application of X-ray and neutron scattering data in biomolecular structure calculation.
To demonstrate the use of scattering data as structural restraints within the Xplor-NIH program.
To review diverse examples of scattering data integration in structure determination.

Main Methods:

Utilizing small and wide angle X-ray scattering (SAXS/WAXS) and small angle neutron scattering (SANS).
Employing the Xplor-NIH software package for structure calculations.
Implementing scattering data as restraints in computational modeling.

Main Results:

Scattering data can be effectively incorporated into Xplor-NIH for structure calculation, with or without NMR data.
Algorithms for calculating scattering curves are detailed.
Examples showcase the utility for single-domain proteins, nucleic acids, and large proteins.

Conclusions:

Scattering techniques provide valuable constraints for determining biomolecular structures.
Xplor-NIH facilitates the integration of scattering data into structure calculation workflows.
Ensemble representations can characterize molecular motions using scattering data.