XFEL structure of influenza A M2 wild type TM domain at high pH in the lipidic cubic phase at room temperature
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
---|---|---|---|
Type | Source | Accession Code | Details |
experimental model | PDB | 4QKM |
Crystallization
Crystalization Experiments | ||||
---|---|---|---|---|
ID | Method | pH | Temperature | Details |
1 | LIPIDIC CUBIC PHASE | 8 | 298 | 0.2 M CaCl2, 0.1 M Tris pH 8.0, 44% PEG 400, monoolein, octyl glucoside |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.75 | 55.2 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 29.826 | α = 90 |
b = 29.826 | β = 90 |
c = 68.011 | γ = 90 |
Symmetry | |
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Space Group | I 4 |
Diffraction
Diffraction Experiment | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol | |||||
1 | 1 | x-ray | 298 | CCD | MPCCD | 2016-07-12 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
---|---|---|---|---|---|
ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | FREE ELECTRON LASER | SACLA BEAMLINE BL3 | 1.1587 | SACLA | BL3 |
Data Collection
Overall | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Merge I (Observed) | CC (Half) | 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 | |||||||
1 | 1.4 | 27.32 | 100 | 0.638 | 0.9996 | 5.14 | 1356 | 6304 |
Highest Resolution Shell | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R Merge I (Observed) | CC (Half) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | ||||||||||
1 | 1.4 | 1.42 | 100 | 0.7061 | 0.3075 | 1.25 | 73 |
Refinement
Statistics | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Diffraction ID | Structure Solution Method | Cross Validation method | Starting model | Resolution (High) | Resolution (Low) | Cut-off Sigma (F) | Number Reflections (Observed) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Factor (Observed) | R-Work (Depositor) | R-Work (DCC) | R-Free (Depositor) | R-Free (DCC) | Mean Isotropic B | ||||
X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | FREE R-VALUE | 4QKM | 1.4 | 21.09 | 1.64 | 5885 | 586 | 99.98 | 0.2014 | 0.1981 | 0.21 | 0.2289 | 0.23 |
RMS Deviations | |
---|---|
Key | Refinement Restraint Deviation |
f_dihedral_angle_d | 9.706 |
f_angle_d | 0.622 |
f_chiral_restr | 0.041 |
f_bond_d | 0.003 |
f_plane_restr | 0.003 |
Non-Hydrogen Atoms Used in Refinement | |
---|---|
Non-Hydrogen Atoms | Number |
Protein Atoms | 196 |
Nucleic Acid Atoms | |
Solvent Atoms | 20 |
Heterogen Atoms | 3 |
Software
Software | |
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Software Name | Purpose |
PHENIX | refinement |
cctbx.xfel | data reduction |
cctbx.prime | data scaling |
PHENIX | phasing |