XFEL structure of Escherichia coli dGTPase
Serial Crystallography (SX)
Starting Model(s)
| Initial Refinement Model(s) |
|---|
| Type | Source | Accession Code | Details |
|---|
|
experimental model | PDB | 6OI7 | |
Crystallization
| Crystalization Experiments |
|---|
| ID | Method | pH | Temperature | Details |
|---|
| 1 | VAPOR DIFFUSION, SITTING DROP | 8 | 279 | 0.1 M Tris-HCl pH 8.0 and 1.6 M Ammonium Sulfate |
| Crystal Properties |
|---|
| Matthews coefficient | Solvent content |
|---|
| 3.78 | 67.5 |
Crystal Data
| Unit Cell |
|---|
| Length ( Å ) | Angle ( ˚ ) |
|---|
| a = 192.589 | α = 90 |
| b = 192.589 | β = 90 |
| c = 291.254 | γ = 90 |
| Symmetry |
|---|
| Space Group | P 43 21 2 |
|---|
Diffraction
| Diffraction Experiment |
|---|
| ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol |
|---|
| 1 | 1 | x-ray | 100 | CCD | RAYONIX MX-325 | | 2014-12-06 | M | SINGLE WAVELENGTH |
| Radiation Source |
|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
|---|
| 1 | FREE ELECTRON LASER | SLAC LCLS BEAMLINE XPP | 1.307 | SLAC LCLS | XPP |
Serial Crystallography
| Sample delivery method |
|---|
| Diffraction ID | Description | Sample Delivery Method |
|---|
| 1 | Loop | fixed target |
| Fixed Target |
|---|
| Diffraction ID | Description | Sample Holding | Support Base | Motion control | Details | Sample Solvent |
|---|
| 1 | Grid | Grid | Goniometer | | | |
| Measurement |
|---|
| Diffraction ID | Pulse Duration | Pulse Repetition Rate | Focal Spot Size | Pulse Energy | Photons Per Pulse |
|---|
| 1 | 30 (fs) | | 3 | 9.5 (KeV) | |
| Data Reduction |
|---|
| Diffraction ID | Frames Indexed | Crystal Hits | Frames Indexed | Latices Merged |
|---|
| 1 | 211 | 233 | 211 | |
Data Collection
| Overall |
|---|
| ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Merge I (Observed) | CC (Half) | R Split (All) | 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 | 3.06 | 25 | 97.9 | 0.66 | 0.32 | 0.39 | 6.1 | 7.3 | | 103325 | | | 2.46 |
| Highest Resolution Shell |
|---|
| ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | Rrim I (All) | CC (Half) | R Split (All) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) |
|---|
| 1 | 3.06 | 3.12 | 91.4 | | 0.84 | 0.23 | 0.88 | 0.8 | 3.3 | |
Refinement
| Statistics |
|---|
| Diffraction ID | Structure Solution Method | Cross Validation method | Starting model | Resolution (High) | Resolution (Low) | 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) | R-Free Selection Details | Mean Isotropic B |
|---|
| X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | THROUGHOUT | 6OI7 | 3.06 | 61.2 | 95415 | 2922 | 92.3 | 0.226 | 0.225 | 0.3 | 0.248 | 0.33 | RANDOM | 64.33 |
| Temperature Factor Modeling |
|---|
| Anisotropic B[1][1] | Anisotropic B[1][2] | Anisotropic B[1][3] | Anisotropic B[2][2] | Anisotropic B[2][3] | Anisotropic B[3][3] |
|---|
| 5.1391 | | | 5.1391 | | -10.2782 |
| RMS Deviations |
|---|
| Key | Refinement Restraint Deviation |
|---|
| t_other_torsion | 22.21 |
| t_omega_torsion | 2.56 |
| t_angle_deg | 1.15 |
| t_bond_d | 0.01 |
| t_dihedral_angle_d | |
| t_incorr_chiral_ct | |
| t_pseud_angle | |
| t_trig_c_planes | |
| t_gen_planes | |
| t_it | |
| RMS Deviations |
|---|
| Key | Refinement Restraint Deviation |
|---|
| t_other_torsion | 22.21 |
| t_omega_torsion | 2.56 |
| t_angle_deg | 1.15 |
| t_bond_d | 0.01 |
| t_dihedral_angle_d | |
| t_incorr_chiral_ct | |
| t_pseud_angle | |
| t_trig_c_planes | |
| t_gen_planes | |
| t_it | |
| t_nbd | |
| t_improper_torsion | |
| t_chiral_improper_torsion | |
| t_sum_occupancies | |
| t_utility_distance | |
| t_utility_angle | |
| t_utility_torsion | |
| t_ideal_dist_contact | |
| Non-Hydrogen Atoms Used in Refinement |
|---|
| Non-Hydrogen Atoms | Number |
|---|
| Protein Atoms | 24723 |
| Nucleic Acid Atoms | |
| Solvent Atoms | 8 |
| Heterogen Atoms | 51 |
Software
| Software |
|---|
| Software Name | Purpose |
|---|
| BUSTER | refinement |
| cctbx.xfel | data reduction |
| cctbx.prime | data scaling |
| PHASER | phasing |