Description
X-ray diffraction patterns from two-dimensional (2-D) protein crystals obtained using femtosecond X-ray pulses from an X-ray free-electron laser (XFEL) are presented. To date, it has not been possible to acquire transmission X-ray diffraction patterns from individual 2-D protein crystals due

X-ray diffraction patterns from two-dimensional (2-D) protein crystals obtained using femtosecond X-ray pulses from an X-ray free-electron laser (XFEL) are presented. To date, it has not been possible to acquire transmission X-ray diffraction patterns from individual 2-D protein crystals due to radiation damage. However, the intense and ultrafast pulses generated by an XFEL permit a new method of collecting diffraction data before the sample is destroyed. Utilizing a diffract-before-destroy approach at the Linac Coherent Light Source, Bragg diffraction was acquired to better than 8.5 Å resolution for two different 2-D protein crystal samples each less than 10 nm thick and maintained at room temperature. These proof-of-principle results show promise for structural analysis of both soluble and membrane proteins arranged as 2-D crystals without requiring cryogenic conditions or the formation of three-dimensional crystals.
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    Title
    • Femtosecond X-ray diffraction from two-dimensional protein crystals
    Date Created
    2014-02-28
    Resource Type
  • Text
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    Identifier
    • Digital object identifier: 10.1107/S2052252514001444
    • Identifier Type
      International standard serial number
      Identifier Value
      2052-2525
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    • View the article as published at http://journals.iucr.org/m/issues/2014/02/00/cw5002/index.html

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    Frank, M., Carlson, D. B., Hunter, M. S., Williams, G. J., Messerschmidt, M., Zatsepin, N. A., . . . Evans, J. E. (2014). Femtosecond X-ray diffraction from two-dimensional protein crystals. IUCrJ, 1(2), 95-100. doi:10.1107/s2052252514001444

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