Biochemical and structural analysis of the Clavulanic acid dehydeogenase (CAD) from Streptomyces clavuligerus
X-RAY DIFFRACTION
Crystallization
| Crystalization Experiments | ||||
|---|---|---|---|---|
| ID | Method | pH | Temperature | Details |
| 1 | 6.5 | 10% PEG 1000, 10% PEG 8000, 0.3 M SODIUM ACETATE, 0.05 M BIS-TRIS BUFFER (PH 6.5) | ||
| Crystal Properties | |
|---|---|
| Matthews coefficient | Solvent content |
| 2.2 | 42.7 |
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) |
| a = 58.748 | α = 90 |
| b = 122.626 | β = 90 |
| c = 126.594 | γ = 90 |
| Symmetry | |
|---|---|
| Space Group | P 21 21 21 |
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 | MARRESEARCH | TOROIDAL MIRROR | 2004-02-24 | M | SINGLE WAVELENGTH | |||||
| Radiation Source | |||||
|---|---|---|---|---|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
| 1 | SYNCHROTRON | ESRF BEAMLINE ID14-3 | ESRF | ID14-3 | |
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 | 1.8 | 29.92 | 96.2 | 0.07 | 19.1 | 5.1 | 82024 | 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 | 1.8 | 1.9 | 80.6 | 0.39 | 3.7 | 4.1 | |||||||||||||
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 | SAD | THROUGHOUT | NONE | 1.8 | 29.92 | 77845 | 4118 | 95.9 | 0.184 | 0.182 | 0.1816 | 0.209 | 0.2085 | RANDOM | 23.95 | ||||
| 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] | |
| 0.2 | 0.2 | -0.39 | ||||
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation |
| r_dihedral_angle_2_deg | 34.493 |
| r_dihedral_angle_4_deg | 14.178 |
| r_dihedral_angle_3_deg | 13.16 |
| r_dihedral_angle_1_deg | 5.908 |
| r_scangle_it | 2.446 |
| r_scbond_it | 1.534 |
| r_angle_refined_deg | 1.295 |
| r_mcangle_it | 0.736 |
| r_mcbond_it | 0.498 |
| r_nbtor_refined | 0.295 |
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number |
| Protein Atoms | 7335 |
| Nucleic Acid Atoms | |
| Solvent Atoms | 494 |
| Heterogen Atoms | 192 |
Software
| Software | |
|---|---|
| Software Name | Purpose |
| REFMAC | refinement |
| MOSFLM | data reduction |
| SCALA | data scaling |
| SHELXCD | phasing |
| SHELXD | phasing |
| autoSHARP | phasing |
