A novel inert crystal delivery medium for serial femtosecond crystallography
- Arizona State Univ., Tempe, AZ (United States);The Biodesign Inst., Tempe, AZ (United States)
- Arizona State Univ., Tempe, AZ (United States); The Biodesign Inst., Tempe, AZ (United States)
- Arizona State Univ., Tempe, AZ (United States)
- SLAC National Accelerator Laboratory, Menlo Park, CA (United States)
- Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Univ. of Wisconsin-Milwaukee, Milwaukee, WI (United States); The Biodesign Inst., Tempe, AZ (United States)
- Univ. of Southern California, Los Angeles, CA (United States)
Serial femtosecond crystallography (SFX) has opened a new era in crystallography by permitting nearly damage-free, room-temperature structure determination of challenging proteins such as membrane proteins. In SFX, femtosecond X-ray free-electron laser pulses produce diffraction snapshots from nanocrystals and microcrystals delivered in a liquid jet, which leads to high protein consumption. A slow-moving stream of agarose has been developed as a new crystal delivery medium for SFX. It has low background scattering, is compatible with both soluble and membrane proteins, and can deliver the protein crystals at a wide range of temperatures down to 4°C. Using this crystal-laden agarose stream, the structure of a multi-subunit complex, phycocyanin, was solved to 2.5 Å resolution using 300 µg of microcrystals embedded into the agarose medium post-crystallization. The agarose delivery method reduces protein consumption by at least 100-fold and has the potential to be used for a diverse population of proteins, including membrane protein complexes.
- Research Organization:
- SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- AC03-76SF00515; SC0010575
- OSTI ID:
- 1208832
- Journal Information:
- IUCrJ, Vol. 2, Issue 4; ISSN 2052-2525
- Publisher:
- International Union of CrystallographyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
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