Microcrystallography, high-pressure cryocooling and BioSAXS at MacCHESS.

Area of Science:

• Structural biology
• Biophysics
• Materials science

Background:

• The Macromolecular Diffraction Facility (MacCHESS) at Cornell High Energy Synchrotron Source (CHESS) is a national research resource.
• It is supported by the National Center for Research Resources of the US National Institutes of Health.
• MacCHESS aims to benefit CHESS users and the broader structural biology community.

Purpose of the Study:

• To present three key research initiatives at MacCHESS.
• To detail advancements in microcrystallography, pressure cryocooling, and BioSAXS.
• To highlight how these initiatives enhance structural biology research.

Main Methods:

• Microcrystallography: Improving diffraction data collection from micro-sized crystals or small regions of inhomogeneous crystals for high-resolution structure determination.
• Pressure cryocooling: Stabilizing transient protein structures and minimizing lattice damage during the cooling process.
• BioSAXS (small-angle X-ray scattering on biological solutions): Extracting molecular shape and other structural information from macromolecules in solution.

Main Results:

• Advancements in microcrystallography enable high-resolution structure determination from challenging samples.
• Pressure cryocooling offers a method to preserve and study transient or delicate biological structures.
• BioSAXS provides insights into the solution structure and dynamics of biological macromolecules.

Conclusions:

• The presented initiatives at MacCHESS significantly contribute to the field of structural biology.
• These advancements provide powerful tools for researchers studying complex biological systems.
• MacCHESS continues to be a vital resource for the structural biology community.