X-RAY DIFFRACTION
Starting Model(s)
| Initial Refinement Model(s) | |||
|---|---|---|---|
| Type | Source | Accession Code | Details |
| experimental model | PDB | 5KEG | Stripped of water, Zn2+, Cl- and ssDNA |
Crystallization
| Crystalization Experiments | ||||
|---|---|---|---|---|
| ID | Method | pH | Temperature | Details |
| 1 | VAPOR DIFFUSION, HANGING DROP | 285 | A3A-E72A (50 mM MES pH 6.0, 100 mM NaCl, 1 mM TCEP, 0.2 mM EDTA) was mixed with oligonucleotides (10 mM Tris/HCl pH 7.9, 1 mM EDTA) at 0.85 mM and 1.7 mM respectively. Dilution was done with protein buffer. The mixture was added to crystallization liquid 1 to 1 and the mixture was pipetted on siliconized glass disks and sealed on top of a reservoir of crystallization liquid for hanging drop crystallization at 12 degrees Celsius. The crystallization liquid has the following composition: 100 mM Bicine at pH 6.6, 200 mM NaCl, 20 mM putrescine, 1 mM TCEP, 1 mM inositol hexaphosphate (phytic acid) and 45 % pentaerythritol propoxylate (5/4 PO/OH) | |
| Crystal Properties | |
|---|---|
| Matthews coefficient | Solvent content |
| 2.3 | 46.65 |
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) |
| a = 49.943 | α = 90 |
| b = 56.365 | β = 104.985 |
| c = 90.113 | γ = 90 |
| Symmetry | |
|---|---|
| Space Group | P 1 21 1 |
Diffraction
| Diffraction Experiment | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol | |||||
| 1 | 1 | x-ray | 100 | PIXEL | DECTRIS EIGER X 16M | 1 vertical and 2 horizontal focussing mirrors | 2021-09-23 | M | SINGLE WAVELENGTH | |||||
| Radiation Source | |||||
|---|---|---|---|---|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
| 1 | SYNCHROTRON | AUSTRALIAN SYNCHROTRON BEAMLINE MX2 | 0.953739 | Australian Synchrotron | MX2 |
Data Collection
| Overall | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Merge I (Observed) | Rpim I (All) | 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 | 2.799 | 48.291 | 97.8 | 0.183 | 0.118 | 0.979 | 4.5 | 3.3 | 11861 | 57 | |||||||||
| Highest Resolution Shell | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R Merge I (Observed) | Rpim I (All) | CC (Half) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | |||||||||
| 1 | 2.8 | 2.95 | 92.8 | 1.157 | 0.735 | 0.466 | 0.8 | 3.4 | |||||||||||
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 (All) | 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 | 5KEG | 2.799 | 48.291 | 11852 | 623 | 97.724 | 0.261 | 0.2577 | 0.26 | 0.3182 | 0.32 | RANDOM | 60.975 | ||||
| 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] | |
| 4.278 | 1.154 | -2.679 | -1.939 | |||
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation |
| r_dihedral_angle_2_deg | 33.612 |
| r_dihedral_angle_4_deg | 23.042 |
| r_dihedral_angle_3_deg | 15.86 |
| r_lrange_it | 10.495 |
| r_lrange_other | 10.44 |
| r_dihedral_angle_1_deg | 7.144 |
| r_scangle_it | 5.221 |
| r_scangle_other | 5.169 |
| r_mcangle_it | 5.097 |
| r_mcangle_other | 5.096 |
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number |
| Protein Atoms | 2924 |
| Nucleic Acid Atoms | 404 |
| Solvent Atoms | 2 |
| Heterogen Atoms | 32 |
Software
| Software | |
|---|---|
| Software Name | Purpose |
| REFMAC | refinement |
| XDS | data reduction |
| JBluIce-EPICS | data collection |
| Aimless | data scaling |
| pointless | data scaling |
| MOLREP | phasing |
| Coot | model building |














