alexa Fabrication of X-ray compatible microfluidic platforms for protein crystallization.
Bioinformatics & Systems Biology

Bioinformatics & Systems Biology

Journal of Glycomics & Lipidomics

Author(s): Guha S, Perry SL, Pawate AS, Kenis PJ

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Abstract This paper reports a method for fabricating multilayer microfluidic protein crystallization platforms using different materials to achieve X-ray transparency and compatibility with crystallization reagents. To validate this approach, three soluble proteins, lysozyme, thaumatin, and ribonuclease A were crystallized on-chip, followed by on-chip diffraction data collection. We also report a chip with an array of wells for screening different conditions that consume a minimal amount of protein solution as compared to traditional screening methods. A large number of high quality isomorphous protein crystals can be grown in the wells, after which slices of X-ray data can be collected from many crystals still residing within the wells. Complete protein structures can be obtained by merging these slices of data followed by further processing with crystallography software. This approach of using an x-ray transparent chip for screening, crystal growth, and X-ray data collection enables room temperature data collection from many crystals mounted in parallel, which thus eliminates crystal handling and minimizes radiation damage to the crystals.
This article was published in Sens Actuators B Chem and referenced in Journal of Glycomics & Lipidomics

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