2.5 angstrom A2a adenosine receptor structure with sulfur SAD phasing using XFEL data
Serial Crystallography (SX)
Crystallization
Crystalization Experiments |
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ID | Method | pH | Temperature | Details |
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1 | LIPIDIC CUBIC PHASE | 5 | 293 | 28 % (v/v) PEG 400, 40 mM sodium thiocyanate and 100 mM sodium citrate buffer pH 5.0 |
Crystal Properties |
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Matthews coefficient | Solvent content |
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2.6 | 52.69 |
Crystal Data
Unit Cell |
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Length ( Å ) | Angle ( ˚ ) |
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a = 40.35 | α = 90 |
b = 180.5 | β = 90 |
c = 142.7 | γ = 90 |
Symmetry |
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Space Group | C 2 2 21 |
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Diffraction
Diffraction Experiment |
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ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol |
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1 | 1 | x-ray | 293 | PIXEL | CS-PAD CXI-1 | K-B mirrors | 2015-04-01 | M | SINGLE WAVELENGTH |
Radiation Source |
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
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1 | FREE ELECTRON LASER | SLAC LCLS BEAMLINE CXI | 2.07 | SLAC LCLS | CXI |
Serial Crystallography
Sample delivery method |
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Diffraction ID | Description | Sample Delivery Method |
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1 | | injection |
Measurement |
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Diffraction ID | Pulse Duration | Pulse Repetition Rate | Focal Spot Size | Pulse Energy | Photons Per Pulse |
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1 | 45 (fs) | 120 | 1.5 | 2.77 (KeV) | 170000000000 |
Data Reduction |
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Diffraction ID | Frames Indexed | Crystal Hits | Frames Indexed | Latices Merged |
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1 | 578620 | 1797503 | 578620 | |
Injection |
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Diffraction ID | Description | Flow Rate | Injector Diameter | Injection Power | Injector Nozzle | Filter Size | Carrier Solvent |
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1 | | 220 (µl/min) | undefined (µm) | | | | |
Data Collection
Overall |
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | Net I Over Average Sigma (I) | Redundancy | Number Reflections (All) | Number Reflections (Observed) | Observed Criterion Sigma (F) | Observed Criterion Sigma (I) | B (Isotropic) From Wilson Plot |
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1 | 2.5 | 24 | 100 | 20.3 | 1022 | | 18582 | | | 41.5 |
Highest Resolution Shell |
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) |
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1 | 2.5 | 2.58 | 83.5 | | 1.6 | 7 | |
Refinement
Statistics |
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Diffraction ID | Structure Solution Method | Cross Validation method | Resolution (High) | Resolution (Low) | Cut-off Sigma (F) | Number Reflections (Observed) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Factor (Observed) | R-Work | R-Free | Mean Isotropic B |
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X-RAY DIFFRACTION | SAD | THROUGHOUT | 2.5 | 23.783 | 1.35 | 18567 | 899 | 99.97 | 0.1768 | 0.1742 | 0.2284 | |
Temperature Factor Modeling |
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Anisotropic B[1][1] | Anisotropic B[1][2] | Anisotropic B[1][3] | Anisotropic B[2][2] | Anisotropic B[2][3] | Anisotropic B[3][3] |
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| | | | | |
RMS Deviations |
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Key | Refinement Restraint Deviation |
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f_dihedral_angle_d | 12.194 |
f_angle_d | 0.907 |
f_chiral_restr | 0.04 |
f_plane_restr | 0.004 |
f_bond_d | 0.002 |
Non-Hydrogen Atoms Used in Refinement |
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Non-Hydrogen Atoms | Number |
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Protein Atoms | 3005 |
Nucleic Acid Atoms | |
Solvent Atoms | 70 |
Heterogen Atoms | 403 |
Software
Software |
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Software Name | Purpose |
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PHENIX | refinement |
CrystFEL | data reduction |
CrystFEL | data scaling |
SHELXD | phasing |
PHASER | phasing |
PHENIX | model building |