Crystal Structure of Active Site Mutant C55A of Nitrile Reductase QueF, Bound to Substrate PreQ0
X-RAY DIFFRACTION
Starting Model(s)
| Initial Refinement Model(s) | |||
|---|---|---|---|
| Type | Source | Accession Code | Details |
| experimental model | PDB | 4F8B | PDB ENTRY 4F8B |
Crystallization
| Crystalization Experiments | ||||
|---|---|---|---|---|
| ID | Method | pH | Temperature | Details |
| 1 | VAPOR DIFFUSION | 7.4 | 293.15 | 16-20% PEG500 MME, 60 mM imidazole, 40 mM imidazolium chloride, pH 7.4, 30 mM calcium chloride, VAPOR DIFFUSION, temperature 293.15K |
| Crystal Properties | |
|---|---|
| Matthews coefficient | Solvent content |
| 2.5 | 50.79 |
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) |
| a = 93.048 | α = 90 |
| b = 93.048 | β = 90 |
| c = 193.651 | γ = 120 |
| Symmetry | |
|---|---|
| Space Group | P 32 2 1 |
Diffraction
| Diffraction Experiment | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol | |||||
| 1 | 1 | x-ray | 200 | CCD | ADSC QUANTUM 315r | mirrors | 2011-02-11 | M | SINGLE WAVELENGTH | |||||
| Radiation Source | |||||
|---|---|---|---|---|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
| 1 | SYNCHROTRON | SSRL BEAMLINE BL9-1 | 1.000003 | SSRL | BL9-1 |
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 | 2.498 | 22.151 | 91.6 | 0.14 | 6.8 | 4 | 34498 | 31577 | 46.6 | ||||||||||
| 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 | 2.498 | 2.54 | 88.8 | 0.65 | 2.3 | 3.9 | 1498 | ||||||||||||
Refinement
| Statistics | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Diffraction ID | Structure Solution Method | Cross Validation method | Starting model | Resolution (High) | Resolution (Low) | Number Reflections (All) | 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 | FOURIER SYNTHESIS | THROUGHOUT | PDB ENTRY 4F8B | 2.498 | 22.15 | 34397 | 29866 | 1592 | 91.46 | 0.23225 | 0.22836 | 0.23 | 0.30485 | 0.3 | RANDOM | 39.309 | |||
| 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] | |
| 0.36 | 0.18 | 0.36 | -0.54 | |||
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation |
| r_dihedral_angle_2_deg | 27.833 |
| r_dihedral_angle_4_deg | 11.448 |
| r_dihedral_angle_3_deg | 11.073 |
| r_scangle_it | 3.033 |
| r_dihedral_angle_1_deg | 2.322 |
| r_angle_refined_deg | 1.997 |
| r_scbond_it | 1.856 |
| r_mcangle_it | 1.424 |
| r_mcbond_it | 0.744 |
| r_chiral_restr | 0.046 |
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number |
| Protein Atoms | 6007 |
| Nucleic Acid Atoms | |
| Solvent Atoms | 205 |
| Heterogen Atoms | 84 |
Software
| Software | |
|---|---|
| Software Name | Purpose |
| Blu-Ice | data collection |
| REFMAC | refinement |
| HKL-2000 | data reduction |
| HKL-2000 | data scaling |
| REFMAC | phasing |














