An acoustic on-chip goniometer for room temperature macromolecular crystallography

Area of Science:

• Structural Biology
• Crystallography
• Biophysics

Background:

• Macromolecular crystallography is crucial for determining protein structures.
• Current methods often require specific sample preparation and can be time-consuming.
• In-situ and in-situ studies of biological macromolecules are gaining importance.

Purpose of the Study:

• To design and develop a cost-effective, on-chip goniometer for macromolecular crystallography.
• To demonstrate the utility of acoustically induced rotations for in-fluid sample reorientation.
• To enable efficient protein structure determination using a novel rotation method.

Main Methods:

• Development of a low-cost, rate-tunable acoustic actuator for sample reorientation.
• Utilisation of the on-chip goniometer for gradual in-fluid sample reorientation about varying axes.
• Collection of diffraction data from a sample within a surface-confined droplet on a synchrotron beamline.

Main Results:

• Successful design, development, and application of the on-chip goniometer.
• Demonstration of acoustically induced rotations for precise sample reorientation in fluid.
• Efficient collection of macromolecular diffraction data for protein structure determination.

Conclusions:

• The on-chip goniometer offers a novel and efficient approach for room-temperature macromolecular crystallography.
• Acoustically induced rotations facilitate in-fluid sample manipulation for structural studies.
• This technology advances the acquisition of structural data in dynamic and fluid environments.