Crystal structure of cofactor-free urate oxidase in complex with its 5-peroxoisourate intermediate (X-ray dose, 1.75 MGy)
X-RAY DIFFRACTION
Crystallization
| Crystalization Experiments | ||||
|---|---|---|---|---|
| ID | Method | pH | Temperature | Details |
| 1 | 8 | 20MG/ML UOX IN 50 MM TRIS-ACETATE PH 8.0 SATURATED WITH 9-METHYL URIC ACID UNDER ANAEROBIC CONDITIONS RESERVOIR: 8% PEG 8000, 50 MM TRIS-ACETATE PH 8.0 CRYSTALLIZATION WAS CARRIED OUT ANAEROBICALLY. CRYSTALS WERE INCUBATED WITH A RESERVOIR SOLUTION ENRICHED BY 10 MM H2O2 AND 20% GLYCEROL TO GENERATE THE PEROXIDE | ||
| Crystal Properties | |
|---|---|
| Matthews coefficient | Solvent content |
| 2.9 | 57.4 |
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) |
| a = 79.94 | α = 90 |
| b = 95.13 | β = 90 |
| c = 104.11 | γ = 90 |
| Symmetry | |
|---|---|
| Space Group | I 2 2 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 | PIXEL | DECTRIS PILATUS 6M | 2013-12-08 | M | SINGLE WAVELENGTH | ||||||
| Radiation Source | |||||
|---|---|---|---|---|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
| 1 | SYNCHROTRON | DIAMOND BEAMLINE I02 | Diamond | I02 | |
Data Collection
| Overall | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Merge I (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 | ||||||||
| 1 | 1.35 | 52.06 | 99.7 | 0.1 | 10.3 | 6.6 | 86674 | -1 | |||||||||||
| Highest Resolution Shell | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R Merge I (Observed) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | |||||||||||
| 1 | 1.35 | 1.39 | 99 | 0.65 | 2.5 | 6.7 | |||||||||||||
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 | OTHER | THROUGHOUT | NONE | 1.35 | 52.06 | 82329 | 4345 | 99.6 | 0.10752 | 0.10634 | 0.12 | 0.12973 | 0.14 | RANDOM | 13.75 | ||||
| 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] | |
| 0.74 | -0.31 | -0.44 | ||||
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation |
| r_sphericity_free | 39.581 |
| r_sphericity_bonded | 9.556 |
| r_rigid_bond_restr | 1.523 |
| r_scbond_it | 1.518 |
| r_mcangle_it | 1.418 |
| r_angle_refined_deg | 1.371 |
| r_mcbond_it | 1.091 |
| r_mcbond_other | 1.091 |
| r_angle_other_deg | 0.747 |
| r_chiral_restr | 0.082 |
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number |
| Protein Atoms | 2360 |
| Nucleic Acid Atoms | |
| Solvent Atoms | 591 |
| Heterogen Atoms | 36 |
Software
| Software | |
|---|---|
| Software Name | Purpose |
| REFMAC | refinement |
| XDS | data reduction |
| Aimless | data scaling |
