2WQP
Crystal structure of sialic acid synthase NeuB-inhibitor complex
X-RAY DIFFRACTION
Crystallization
| Crystalization Experiments | ||||
|---|---|---|---|---|
| ID | Method | pH | Temperature | Details |
| 1 | 6.2 | 1.50-1.55 M MALIC ACID, PH 6.2 | ||
| Crystal Properties | |
|---|---|
| Matthews coefficient | Solvent content |
| 2.24 | 45 |
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) |
| a = 58.619 | α = 90 |
| b = 75.744 | β = 90 |
| c = 77.361 | γ = 90 |
| Symmetry | |
|---|---|
| Space Group | P 21 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 | BMC | HIGH-RESOLUTION DOUBLE- CRYSTAL SAGITTAL FOCUSING | 2008-06-26 | M | SINGLE WAVELENGTH | |||||
| Radiation Source | |||||
|---|---|---|---|---|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
| 1 | SYNCHROTRON | ALS BEAMLINE 4.2.2 | ALS | 4.2.2 | |
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 | 1.75 | 40 | 99.3 | 0.1 | 12.4 | 4 | 35158 | 2 | |||||||||||
| 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 | 1.75 | 1.84 | 97 | 0.46 | 2.2 | 3.6 | |||||||||||||
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 | 1.75 | 40 | 33373 | 1754 | 99.1 | 0.165 | 0.163 | 0.189 | 0.196 | 0.2173 | RANDOM | 8.41 | ||||
| Temperature Factor Modeling | ||||||
|---|---|---|---|---|---|---|
| Anisotropic B[1][1] | Anisotropic B[2][2] | Anisotropic B[3][3] | ||||
| 0.92 | -1.13 | 0.2 | ||||
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation |
| r_dihedral_angle_2_deg | 35.602 |
| r_dihedral_angle_4_deg | 19.795 |
| r_dihedral_angle_3_deg | 12.22 |
| r_dihedral_angle_1_deg | 5.563 |
| r_scangle_it | 2.943 |
| r_scbond_it | 1.946 |
| r_angle_refined_deg | 1.202 |
| r_mcangle_it | 0.911 |
| r_angle_other_deg | 0.637 |
| r_mcbond_it | 0.495 |
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number |
| Protein Atoms | 2681 |
| Nucleic Acid Atoms | |
| Solvent Atoms | 322 |
| Heterogen Atoms | 55 |
Software
| Software | |
|---|---|
| Software Name | Purpose |
| REFMAC | refinement |
| MOSFLM | data reduction |
| SCALA | data scaling |
