The structure of 3-deoxy-d-arabino-heptulosonate 7-phosphate synthase from mycobacterium tuberculosis complexed with tryptophan
X-RAY DIFFRACTION
Starting Model(s)
| Initial Refinement Model(s) | |||
|---|---|---|---|
| Type | Source | Accession Code | Details |
| experimental model | PDB | 2B7O | |
Crystallization
| Crystalization Experiments | ||||
|---|---|---|---|---|
| ID | Method | pH | Temperature | Details |
| 1 | VAPOR DIFFUSION, SITTING DROP | 7.5 | 295 | 20MM BTP, 150MM NACL, 0.5MM TCEP, 0.005%(V/V) THESIT, 0.2MM PEP, 0.1MM MNCL2, 0.1M NA HEPES, 0.8M NAK PHOSPHATE, pH 7.5, VAPOR DIFFUSION, SITTING DROP, temperature 295K |
| Crystal Properties | |
|---|---|
| Matthews coefficient | Solvent content |
| 3.94 | 68.8 |
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) |
| a = 204.712 | α = 90 |
| b = 204.712 | β = 90 |
| c = 66.264 | 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 | 100 | CCD | ADSC QUANTUM 315 | Double-crystal, Si(111) | 2005-03-01 | M | SINGLE WAVELENGTH | |||||
| Radiation Source | |||||
|---|---|---|---|---|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
| 1 | SYNCHROTRON | SSRL BEAMLINE BL9-2 | 0.97929 | SSRL | BL9-2 |
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 | 2.5 | 50 | 100 | 0.134 | 10.4 | 2.8 | 52344 | 52344 | |||||||||||
| 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 | 2.5 | 2.59 | 100 | 0.633 | 2.1 | 2.8 | 52344 | ||||||||||||
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 | 2B7O | 2.5 | 38.69 | 52324 | 2815 | 99.98 | 0.19101 | 0.18901 | 0.19 | 0.22814 | 0.23 | RANDOM | 28.181 | ||||
| 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] | |
| -0.02 | -0.01 | -0.02 | 0.03 | |||
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation |
| r_dihedral_angle_2_deg | 36.629 |
| r_dihedral_angle_4_deg | 21.011 |
| r_dihedral_angle_3_deg | 17.228 |
| r_dihedral_angle_1_deg | 6.698 |
| r_scangle_it | 4.766 |
| r_scbond_it | 3.239 |
| r_mcangle_it | 2.144 |
| r_angle_refined_deg | 1.67 |
| r_angle_other_deg | 1.305 |
| r_mcbond_it | 1.249 |
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number |
| Protein Atoms | 6871 |
| Nucleic Acid Atoms | |
| Solvent Atoms | 297 |
| Heterogen Atoms | 121 |
Software
| Software | |
|---|---|
| Software Name | Purpose |
| Blu-Ice | data collection |
| CCP4 | model building |
| REFMAC | refinement |
| DENZO | data reduction |
| SCALEPACK | data scaling |
| CCP4 | phasing |














