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Related Experiment Videos

The macromolecular neutron diffractometer at the spallation neutron source.

Leighton Coates1, Brendan Sullivan1

  • 1Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN, United States.

Methods in Enzymology
|February 26, 2020
PubMed
Summary

The Macromolecular Neutron Diffractometer (MaNDi) uses pulsed neutron beams for protein crystal Laue diffraction. It is optimized for crystals with unit cell axes from 30-300Å, offering flexible data collection.

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Area of Science:

  • Neutron scattering
  • Structural biology
  • Crystallography

Background:

  • Neutron diffraction is a powerful technique for determining the structure of biological macromolecules.
  • Existing instruments may have limitations in sample size or data collection flexibility.

Purpose of the Study:

  • To introduce the Macromolecular Neutron Diffractometer (MaNDi) at Oak Ridge National Laboratory.
  • To highlight MaNDi's capabilities for collecting Laue diffraction data from protein crystals.

Main Methods:

  • Utilizes the Spallation Neutron Source's pulsed neutron production for time-of-flight/wavelength measurement.
  • MaNDi is optimized for protein crystals with unit cell axes between 30 and 300Å.
  • Offers adjustable parameters like wavelength bandwidth and beam divergence.
Keywords:
IntegrationLaue diffractionNeutron crystallographyProfile fittingTime-of-flight

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Main Results:

  • Enables Laue diffraction data collection using pulsed neutron sources.
  • Provides flexibility for various experimental setups and sample types.
  • Supports data collection at room temperature and 100K.

Conclusions:

  • MaNDi is a versatile instrument for macromolecular crystallography.
  • Its design facilitates efficient data collection from a range of protein crystal systems.
  • It expands the capabilities for neutron-based structural studies.