Structure of Homoprotocatechuate 2,3-Dioxygenase from B.fuscum in complex with HPCA at 1.50 Ang resolution
X-RAY DIFFRACTION
Crystallization
| Crystalization Experiments | ||||
|---|---|---|---|---|
| ID | Method | pH | Temperature | Details |
| 1 | VAPOR DIFFUSION, HANGING DROP | 7.4 | 293 | 13% PEG6000, 0.1M calcium chloride, 0.1M Tris-HCl. Cryoprotectant 25% PEG400. Ligand soaking: 2mM HPCA for 30min in anaerobic glovebox atmosphere prior to cryo-cooling in liquid nitrogen., pH 7.4, VAPOR DIFFUSION, HANGING DROP, temperature 293K |
| Crystal Properties | |
|---|---|
| Matthews coefficient | Solvent content |
| 2.4 | 48.79 |
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) |
| a = 110.54 | α = 90 |
| b = 150.785 | β = 90 |
| c = 96.276 | 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 | PIXEL | DECTRIS PILATUS 6M | 2012-04-06 | M | SINGLE WAVELENGTH | ||||||
| Radiation Source | |||||
|---|---|---|---|---|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
| 1 | SYNCHROTRON | SOLEIL BEAMLINE PROXIMA 1 | 0.9801 | SOLEIL | PROXIMA 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 | 1.5 | 48.1 | 98.9 | 0.03 | 14.5 | 4.5 | 252890 | 252890 | -3 | ||||||||||
| 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 | 1.5 | 1.58 | 98.7 | 0.384 | 2.3 | 4.4 | 36595 | ||||||||||||
Refinement
| Statistics | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Diffraction ID | Structure Solution Method | Cross Validation method | 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 | 1.5 | 45.86 | 240211 | 12607 | 98.66 | 0.12845 | 0.12674 | 0.14 | 0.16071 | 0.17 | RANDOM | 17.364 | |||||
| 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] | |
| 0.05 | -0.02 | -0.03 | ||||
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation |
| r_dihedral_angle_2_deg | 32.481 |
| r_sphericity_free | 23.032 |
| r_dihedral_angle_4_deg | 18.06 |
| r_dihedral_angle_3_deg | 12.069 |
| r_sphericity_bonded | 9.716 |
| r_dihedral_angle_1_deg | 6.989 |
| r_rigid_bond_restr | 2.318 |
| r_angle_refined_deg | 1.373 |
| r_angle_other_deg | 0.89 |
| r_chiral_restr | 0.088 |
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number |
| Protein Atoms | 11570 |
| Nucleic Acid Atoms | |
| Solvent Atoms | 1646 |
| Heterogen Atoms | 141 |
Software
| Software | |
|---|---|
| Software Name | Purpose |
| MX | data collection |
| REFMAC | refinement |
| XDS | data reduction |
| SCALA | data scaling |














