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Observation of a single protein by ultrafast X-ray diffraction

Journal Article · · Light, Science & Applications
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  1. Uppsala Univ. (Sweden)
  2. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
  3. European XFEL, Schenefeld (Germany)
  4. Science and Technology Facilities Council (STFC), Oxford (United Kingdom). Diamond Light Source, Ltd.
  5. University of Stavanger (Norway)
  6. Leibniz Institute for Experimental Virology (Germany)
  7. Univ. degli Studi di Milano (Italy)
  8. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany). Center for Free-Electron Laser Science
  9. Uppsala Univ. (Sweden); Cornell Univ., Ithaca, NY (United States)
  10. PNSensor, München (Germany)
  11. European XFEL, Schenefeld (Germany); KTH Royal Inst. of Technology, Stockholm (Sweden)
  12. ELI Beamlines, Prague (Czech Republic)
  13. Centre for Structural Systems Biology (Germany); University Medical Center Hamburg-Eppendorf (UKE)
  14. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany). Center for Free-Electron Laser Science; Univ. of Hamburg (Germany)
  15. European XFEL, Schenefeld (Germany); La Trobe Univ., Melbourne, VIC (Australia)
  16. European XFEL, Schenefeld (Germany); Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
  17. Univ. of Hamburg (Germany); Max Planck Institute for the Structure and Dynamics of Matter (Germany); Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany). Center for Free-Electron Laser Science
  18. European XFEL, Schenefeld (Germany); Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany). Center for Free-Electron Laser Science; Max Planck Institute for the Structure and Dynamics of Matter (Germany)
  19. KTH Royal Inst. of Technology, Stockholm (Sweden)
  20. Centre for Structural Systems Biology (Germany); Univ. of Hamburg (Germany)
  21. Uppsala Univ. (Sweden); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

The idea of using ultrashort X-ray pulses to obtain images of single proteins frozen in time has fascinated and inspired many. It was one of the arguments for building X-ray free-electron lasers. According to theory, the extremely intense pulses provide sufficient signal to dispense with using crystals as an amplifier, and the ultrashort pulse duration permits capturing the diffraction data before the sample inevitably explodes. This was first demonstrated on biological samples a decade ago on the giant mimivirus. Since then, a large collaboration has been pushing the limit of the smallest sample that can be imaged. The ability to capture snapshots on the timescale of atomic vibrations, while keeping the sample at room temperature, may allow probing the entire conformational phase space of macromolecules. Here we show the first observation of an X-ray diffraction pattern from a single protein, that of Escherichia coli GroEL which at 14 nm in diameter is the smallest biological sample ever imaged by X-rays, and demonstrate that the concept of diffraction before destruction extends to single proteins. From the pattern, it is possible to determine the approximate orientation of the protein. Our experiment demonstrates the feasibility of ultrafast imaging of single proteins, opening the way to single-molecule time-resolved studies on the femtosecond timescale.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
2471149
Journal Information:
Light, Science & Applications, Journal Name: Light, Science & Applications Journal Issue: 1 Vol. 13; ISSN 2047-7538
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

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Observation of a single protein by ultrafast X-ray diffraction dataset January 2024

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