Application of a high-throughput microcrystal delivery system to serial femtosecond crystallography.
JOURNAL OF APPLIED CRYSTALLOGRAPHY(2020)
摘要
Microcrystal delivery methods are pivotal in the use of serial femtosecond crystallography (SFX) to resolve the macromolecular structures of proteins. Here, the development of a novel technique and instruments for efficiently delivering microcrystals for SFX are presented. The new method, which relies on a one-dimensional fixed-target system that includes a microcrystal container, consumes an extremely low amount of sample compared with conventional two-dimensional fixed-target techniques at ambient temperature. This novel system can deliver soluble microcrystals without highly viscous carrier media and, moreover, can be used as a microcrystal growth device for SFX. Diffraction data collection utilizing this advanced technique along with a real-time visual servo scan system has been successfully demonstrated for the structure determination of proteinase K microcrystals at 1.85 angstrom resolution.
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关键词
high-throughput microcrystal delivery,HT-MCD,microcrystal delivery systems,serial femtosecond crystallography,X-ray free-electron lasers,XFELs
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