1JUS
Crystal structure of the multidrug binding transcriptional repressor QacR bound to rhodamine 6G
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 7.5 | 298 | Ammonium sulphate,crystals were grown after the protein was reductively alkylated. All QacR-drug complexes were crystallized in this manner. Although not required, only small crystals are obtained otherwise and take several months to grow., pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
3.81 | 67.73 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 172.3 | α = 90 |
b = 172.3 | β = 90 |
c = 95 | γ = 90 |
Symmetry | |
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Space Group | P 42 21 2 |
Diffraction
Diffraction Experiment | ||||||||||||||
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ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol | |||||
1 | 1 | x-ray | 100 | CCD | ADSC QUANTUM 4 | 2000-10-24 | M | MAD |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | SSRL BEAMLINE BL9-2 | SSRL | BL9-2 |
Data Collection
Overall | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Sym 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 | 2.84 | 83.2 | 99.9 | 0.049 | 10.5 | 6.9 | 34367 | 34367 | 45.6 |
Highest Resolution Shell | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R-Sym I (Observed) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | |||||||||||
2.84 | 2.91 | 99.9 | 0.259 | 2.9 | 7 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Cross Validation method | Resolution (High) | Resolution (Low) | Number Reflections (Observed) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Work | R-Free | R-Free Selection Details | Mean Isotropic B | ||||||||
X-RAY DIFFRACTION | MAD | THROUGHOUT | 2.84 | 77.06 | 34321 | 3424 | 99.7 | 0.23 | 0.272 | RANDOM | 68.7 |
Temperature Factor Modeling | ||||||
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Anisotropic B[1][1] | Anisotropic B[1][2] | Anisotropic B[1][3] | Anisotropic B[2][2] | Anisotropic B[2][3] | Anisotropic B[3][3] | |
2.7 | 2.7 | -5.41 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
c_dihedral_angle_d | 19.1 |
c_scangle_it | 3.47 |
c_mcangle_it | 2.83 |
c_scbond_it | 2.09 |
c_mcbond_it | 1.59 |
c_angle_deg | 1.3 |
c_improper_angle_d | 0.78 |
c_bond_d | 0.009 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 6188 |
Nucleic Acid Atoms | |
Solvent Atoms | 62 |
Heterogen Atoms | 148 |
Software
Software | |
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Software Name | Purpose |
CNS | refinement |
MOSFLM | data reduction |
CCP4 | data scaling |
CNS | phasing |