Crystal structure of Providencia alcalifaciens 3-dehydroquinate synthase (DHQS) in complex with Mg2+ and NAD
X-RAY DIFFRACTION
Starting Model(s)
| Initial Refinement Model(s) | |||
|---|---|---|---|
| Type | Source | Accession Code | Details |
| experimental model | PDB | 3OKF | |
Crystallization
| Crystalization Experiments | ||||
|---|---|---|---|---|
| ID | Method | pH | Temperature | Details |
| 1 | VAPOR DIFFUSION, SITTING DROP | 6.5 | 293 | 10 mM Bis Tris Propane (pH 7.0) buffer, 200 mM MgCl2 and 28% polyethylene glycol 4000 |
| Crystal Properties | |
|---|---|
| Matthews coefficient | Solvent content |
| 2.34 | 47.34 |
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) |
| a = 89.39 | α = 90 |
| b = 59.92 | β = 93.95 |
| c = 143.8 | 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 PILATUS 6M | 2017-11-02 | M | SINGLE WAVELENGTH | ||||||
| Radiation Source | |||||
|---|---|---|---|---|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
| 1 | SYNCHROTRON | ESRF BEAMLINE ID30B | 0.9762 | ESRF | ID30B |
Data Collection
| Overall | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Merge I (Observed) | Rrim I (All) | 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 | 1.87 | 143.46 | 98.9 | 0.05 | 0.07 | 0.05 | 0.997 | 11.4 | 3 | 123349 | |||||||||
| Highest Resolution Shell | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R Merge I (Observed) | Rrim I (All) | Rpim I (All) | CC (Half) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | ||||||||
| 1 | 1.87 | 1.91 | 0.45 | 0.55 | 0.38 | 0.81 | 2.2 | ||||||||||||
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 | 3OKF | 1.88 | 143.46 | 117334 | 6015 | 98.9 | 0.1765 | 0.1734 | 0.18 | 0.2381 | 0.24 | RANDOM | 40.942 | ||||
| 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] | |
| -0.09 | 0.56 | 0.35 | -0.34 | |||
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation |
| r_dihedral_angle_2_deg | 34.815 |
| r_sphericity_bonded | 23.495 |
| r_sphericity_free | 23.24 |
| r_dihedral_angle_4_deg | 17.001 |
| r_dihedral_angle_3_deg | 14.891 |
| r_rigid_bond_restr | 7.942 |
| r_dihedral_angle_1_deg | 6.151 |
| r_angle_refined_deg | 1.913 |
| r_angle_other_deg | 1.154 |
| r_chiral_restr | 0.128 |
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number |
| Protein Atoms | 10917 |
| Nucleic Acid Atoms | |
| Solvent Atoms | 1094 |
| Heterogen Atoms | 367 |
Software
| Software | |
|---|---|
| Software Name | Purpose |
| REFMAC | refinement |
| XDS | data reduction |
| XSCALE | data scaling |
| MOLREP | phasing |
| PDB_EXTRACT | data extraction |














