X-Ray Free Electron Laser for Fixed-Target Protein Serial Microcrystallography
News Oct 06, 2014
We present results from experiments at the Linac Coherent Light Source (LCLS) demonstrating that serial femtosecond crystallography (SFX) can be performed to high resolution (~2.5 Å) using protein microcrystals deposited on an ultra-thin silicon nitride membrane and embedded in a preservation medium at room temperature. Data can be acquired at a high acquisition rate using x-ray free electron laser sources to overcome radiation damage, while sample consumption is dramatically reduced compared to flowing jet methods. We achieved a peak data acquisition rate of 10 Hz with a hit rate of ~38%, indicating that a complete data set could be acquired in about one 12-hour LCLS shift using the setup described here, or in even less time using hardware optimized for fixed target SFX. This demonstration opens the door to ultra low sample consumption SFX using the technique of diffraction-before-destruction on proteins that exist in only small quantities and/or do not produce the copious quantities of microcrystals required for flowing jet methods.
The article, Fixed-target protein serial microcrystallography with an x-ray free electron laser, is published in Scientific Reports and is free to access.
X-Rays Reveal the Biting Truth About Parrotfish TeethNews
A new study utilising x-ray crystallography reveals a chain mail-like woven microstructure that gives parrotfish teeth their remarkable bite and resilience.
Elpis BioMed Closes Funding Round to Commercialise Novel Technology Platform for Generating Human Cell TypesNews
New Cambridge spin-out company commercialises disruptive technology that enables rapid generation of pure and consistent batches of human cell types. Geographically diversified, top-tier investor team includes key industry leaders to support early company development.READ MORE
Quotient Sciences Acquires Pharmaterials, a UK-based Contract Development and Manufacturing OrganizationNews
Quotient Sciences, the drug development services organization, announces it has acquired Pharmaterials, a contract development and manufacturing organization (CDMO) based in Reading, U.K..READ MORE