4V2G
Tetracycline repressor TetR(D) bound to chlortetracycline and iso- chlortetracycline
X-RAY DIFFRACTION
Starting Model(s)
| Initial Refinement Model(s) | |||
|---|---|---|---|
| Type | Source | Accession Code | Details |
| experimental model | PDB | 2TCT | PDB ENTRY 2TCT |
Crystallization
| Crystalization Experiments | ||||
|---|---|---|---|---|
| ID | Method | pH | Temperature | Details |
| 1 | 8 | PH 8.0 | ||
| Crystal Properties | |
|---|---|
| Matthews coefficient | Solvent content |
| 2.35 | 40 |
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) |
| a = 69.249 | α = 90 |
| b = 69.249 | β = 90 |
| c = 182.373 | γ = 90 |
| Symmetry | |
|---|---|
| Space Group | P 43 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 | 287 | IMAGE PLATE | MARRESEARCH | 1997-04-15 | M | SINGLE WAVELENGTH | ||||||
| Radiation Source | |||||
|---|---|---|---|---|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
| 1 | ROTATING ANODE | ENRAF-NONIUS FR571 | |||
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 | 2.7 | 19.9 | 99 | 0.08 | 13 | 4.7 | 11449 | -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 | 2.7 | 2.8 | 96 | 0.23 | 5 | 4.5 | |||||||||||||
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 | R-Free | R-Free Selection Details | Mean Isotropic B | ||||||
| X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | THROUGHOUT | PDB ENTRY 2TCT | 2.71 | 64.74 | 11449 | 1260 | 99 | 0.18203 | 0.17464 | 0.25156 | RANDOM | 42.879 | ||||||
| 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] | |
| 0.65 | 0.65 | -1.3 | ||||
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation |
| r_dihedral_angle_2_deg | 37.967 |
| r_dihedral_angle_4_deg | 20.032 |
| r_dihedral_angle_3_deg | 18.949 |
| r_dihedral_angle_1_deg | 6.387 |
| r_mcangle_it | 4.906 |
| r_scbond_it | 3.695 |
| r_mcbond_it | 3.063 |
| r_mcbond_other | 3.063 |
| r_angle_refined_deg | 1.622 |
| r_angle_other_deg | 1.14 |
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number |
| Protein Atoms | 3202 |
| Nucleic Acid Atoms | |
| Solvent Atoms | 33 |
| Heterogen Atoms | 67 |
Software
| Software | |
|---|---|
| Software Name | Purpose |
| REFMAC | refinement |
| SCALEPACK | data scaling |
| X-PLOR | phasing |
