Related Experiment Video
Updated: Aug 5, 2026

Sample Preparation and Transfer Protocol for In-Vacuum Long-Wavelength Crystallography on Beamline I23 at Diamond Light Source
Published on: April 23, 2021
Beamline X29: a novel undulator source for X-ray crystallography
Wuxian Shi1, Howard Robinson, Michael Sullivan
1Center for Synchrotron Biosciences, Case Proteomics Center, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106, USA.
A new high-flux beamline at the National Synchrotron Light Source (NSLS) enhances macromolecular crystallography. Beamline X29 offers intense, focused X-rays, enabling high-throughput structural genomics and research.
Area of Science:
- * Synchrotron Radiation Science
- * Materials Science
- * Biophysics
Background:
- * Macromolecular crystallography requires high-intensity X-ray sources for detailed structural analysis.
- * Existing beamlines at the National Synchrotron Light Source (NSLS) had limitations in flux and collimation for advanced experiments.
Purpose of the Study:
- * To develop and implement a novel high-flux insertion device and beamline for advanced macromolecular crystallography.
- * To significantly increase X-ray brightness and improve beam quality for structural biology research.
Main Methods:
- * Installation of a mini-gap undulator (12.5 mm period) at beamline X29, operating at 3.3-10 mm gaps.
- * Implementation of advanced X-ray optics, including a sagittally focusing cryo-cooled monochromator and a vertical focusing mirror.
- * Integration of a high-speed CCD detector and an auto-mounter crystal changer for automated data collection.
Main Results:
- * Beamline X29 achieves an actual flux of 2.5 x 10^11 photons/s at 11.271 keV.
- * The beamline provides hard X-rays (5-15 keV) with high collimation and intensity, 1000 times brighter than bending-magnet sources at NSLS.
- * Facilitates high-throughput data collection for structural genomics and collaborative research programs.
Conclusions:
- * The new mini-gap undulator beamline X29 at NSLS represents a significant advancement for macromolecular crystallography.
- * It enables more efficient and detailed structural studies, supporting major research initiatives in structural genomics.
Related Concept Videos
Determination of Crystal Structures
X-ray Crystallography
Diffraction
Diffraction is the change in the direction of travel experienced by an electromagnetic wave when it encounters a physical barrier whose dimensions are comparable to those of the wavelength of the light. X-rays are electromagnetic radiation with wavelengths about as long as the distance between neighboring...
X-ray Diffraction of Biological Samples
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...

