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Serial femtosecond crystallography of soluble proteins in lipidic cubic phase

Journal Article · · IUCrJ
 [1];  [2];  [3];  [1];  [1];  [4];  [1];  [5];  [5];  [6];  [6];  [1];  [2]
  1. Arizona State Univ., Tempe, AZ (United States)
  2. Univ. of Southern California, Los Angeles, CA (United States)
  3. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany); Univ. of Hamburg, Hamburg (Germany)
  4. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  5. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
  6. Arizona State Univ., Mesa, AZ (United States)
Serial femtosecond crystallography (SFX) at X-ray free-electron lasers (XFELs) enables high-resolution protein structure determination using micrometre-sized crystals at room temperature with minimal effects from radiation damage. SFX requires a steady supply of microcrystals intersecting the XFEL beam at random orientations. An LCP–SFX method has recently been introduced in which microcrystals of membrane proteins are grown and delivered for SFX data collection inside a gel-like membrane-mimetic matrix, known as lipidic cubic phase (LCP), using a special LCP microextrusion injector. Here, it is shown enabling a dramatic reduction in the amount of crystallized protein required for data collection compared with crystals delivered by liquid injectors. High-quality LCP–SFX data sets were collected for two soluble proteins, lysozyme and phycocyanin, using less than 0.1 mg of each protein.
Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC03-76SF00515
OSTI ID:
1224055
Alternate ID(s):
OSTI ID: 1260560
Journal Information:
IUCrJ, Journal Name: IUCrJ Journal Issue: 5 Vol. 2; ISSN 2052-2525; ISSN IUCRAJ
Publisher:
International Union of CrystallographyCopyright Statement
Country of Publication:
United States
Language:
English

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Serial Femtosecond Crystallography text January 2015
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On-chip crystallization for serial crystallography experiments and on-chip ligand-binding studies text January 2019
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