Crystal structure of dihydroorotase pyrC from Vibrio cholerae in complex with zinc at 1.95 A resolution.
X-RAY DIFFRACTION
Starting Model(s)
| Initial Refinement Model(s) | |||
|---|---|---|---|
| Type | Source | Accession Code | Details |
| experimental model | PDB | 5V0G | |
Crystallization
| Crystalization Experiments | ||||
|---|---|---|---|---|
| ID | Method | pH | Temperature | Details |
| 1 | VAPOR DIFFUSION, SITTING DROP | 6.5 | 289 | 0.2 ul of 14 mg/ml protein in 20 mM HEPES pH 7.5, 150 mM NaCl, 10% Glycerol, 0.1% Sodium Azide, 0.5 mM TCE, and 20 mM L-citruline were mixed with 0.2 ul of the Top96 screen condition #C11 (0.2 M Sodium Acetate 0.1 M Sodium Cacodylate: HCl, pH 6.5 30 % (w/v) PEG 8000), 0.1 ul of the Hampton Additive screen # 94 (7%v/v 1-Butanol) and equilibrated against 1.5 M NaCl solution in 96 Well 3 drop Crystallization Plate (Swissci). Before crystallization protein was incubated with 1/50 v/v of 2 mg/ml chymotrypsin solution at 289 K for 1 hours. |
| Crystal Properties | |
|---|---|
| Matthews coefficient | Solvent content |
| 2 | 38.54 |
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) |
| a = 62.507 | α = 90 |
| b = 57.257 | β = 105.09 |
| c = 87.524 | 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 | CCD | MARMOSAIC 300 mm CCD | Beryllium Lenses | 2017-03-12 | M | SINGLE WAVELENGTH | |||||
| Radiation Source | |||||
|---|---|---|---|---|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
| 1 | SYNCHROTRON | APS BEAMLINE 21-ID-F | 0.97872 | APS | 21-ID-F |
Data Collection
| Overall | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Merge I (Observed) | R Sym 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 | 1.95 | 20 | 94.1 | 0.063 | 0.063 | 0.075 | 0.04 | 0.87 | 11.4 | 3.3 | 41257 | -3 | 32.8 | ||||||
| Highest Resolution Shell | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R Merge I (Observed) | R-Sym I (Observed) | Rrim I (All) | Rpim I (All) | CC (Half) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | |||||||
| 1 | 1.95 | 1.98 | 62.5 | 0.372 | 0.372 | 0.454 | 0.257 | 0.871 | 2.3 | 2.6 | |||||||||
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 | MOLECULAR REPLACEMENT | THROUGHOUT | 5V0G | 1.95 | 20 | 39091 | 2077 | 93.97 | 0.1695 | 0.1676 | 0.18 | 0.203 | 0.21 | RANDOM | 48.505 | ||||
| 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] | |
| 0.3 | 0.65 | 5.04 | -4.96 | |||
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation |
| r_dihedral_angle_2_deg | 35.157 |
| r_sphericity_bonded | 20.358 |
| r_dihedral_angle_4_deg | 15.236 |
| r_dihedral_angle_3_deg | 11.708 |
| r_dihedral_angle_1_deg | 6.003 |
| r_angle_refined_deg | 1.349 |
| r_angle_other_deg | 0.971 |
| r_chiral_restr | 0.075 |
| r_bond_refined_d | 0.01 |
| r_bond_other_d | 0.007 |
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number |
| Protein Atoms | 5118 |
| Nucleic Acid Atoms | |
| Solvent Atoms | 227 |
| Heterogen Atoms | 21 |
Software
| Software | |
|---|---|
| Software Name | Purpose |
| MD2 | data collection |
| SCALEPACK | data scaling |
| HKL-3000 | data reduction |
| MOLREP | phasing |
| REFMAC | refinement |
| PDB_EXTRACT | data extraction |














