3UX4
Crystal structure of the urea channel from the human gastric pathogen Helicobacter pylori
X-RAY DIFFRACTION
Crystallization
| Crystalization Experiments | ||||
|---|---|---|---|---|
| ID | Method | pH | Temperature | Details |
| 1 | VAPOR DIFFUSION, HANGING DROP | 5.3 | 285 | Drop: 1.57 mg/mL UreI protein, 0.04 M NaCl, 1 mM TlCl, 0.01 M CaCl2, 7% PEG400, 0.05% decylmaltoside, 2.25% octylglucoside, 0.8 mg/mL E. coli polar lipids, 0.035 M MES, pH5.3, reservoir: 20% PEG400, 0.1 M MES, pH 5.3, VAPOR DIFFUSION, HANGING DROP, temperature 285K |
| Crystal Properties | |
|---|---|
| Matthews coefficient | Solvent content |
| 4.1 | 69.99 |
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) |
| a = 122.904 | α = 90 |
| b = 122.904 | β = 90 |
| c = 141.348 | γ = 90 |
| Symmetry | |
|---|---|
| Space Group | P 42 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 | ADSC QUANTUM 315 | 2011-07-23 | M | SINGLE WAVELENGTH | ||||||
| Radiation Source | |||||
|---|---|---|---|---|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
| 1 | SYNCHROTRON | APS BEAMLINE 24-ID-C | 0.97911 | APS | 24-ID-C |
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 | 3.256 | 92.746 | 98.8 | 0.05 | 21.2 | 6.2 | 17274 | 17263 | 2 | 1.6 | |||||||||
| 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 | 3.256 | 3.43 | 97.9 | 1.108 | 1.6 | 6.2 | |||||||||||||
Refinement
| Statistics | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Diffraction ID | Structure Solution Method | Cross Validation method | Resolution (High) | Resolution (Low) | Number Reflections (All) | Number Reflections (Observed) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Factor (Observed) | R-Work | R-Free | R-Free Selection Details | Mean Isotropic B | ||||||
| X-RAY DIFFRACTION | THROUGHOUT | 3.26 | 39.35 | 17190 | 16314 | 872 | 98.18 | 0.24233 | 0.23929 | 0.29949 | RANDOM | 164.174 | |||||||
| 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] | |
| -0.63 | -0.63 | 1.26 | ||||
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation |
| r_dihedral_angle_2_deg | 37.296 |
| r_dihedral_angle_4_deg | 19.295 |
| r_dihedral_angle_3_deg | 18.637 |
| r_rigid_bond_restr | 11.159 |
| r_dihedral_angle_1_deg | 7.742 |
| r_angle_refined_deg | 1.468 |
| r_chiral_restr | 0.082 |
| r_bond_refined_d | 0.01 |
| r_gen_planes_refined | 0.008 |
| r_bond_other_d | |
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number |
| Protein Atoms | 4284 |
| Nucleic Acid Atoms | |
| Solvent Atoms | |
| Heterogen Atoms | 198 |
Software
| Software | |
|---|---|
| Software Name | Purpose |
| ADSC | data collection |
| SHARP | phasing |
| REFMAC | refinement |
| XDS | data reduction |
| SCALA | data scaling |
