3JSO
Classic Protein With a New Twist: crystal structure of a LexA repressor DNA complex
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | hanging drop | 6.8 | 292 | 0.1M Bis-tris propane, 0.05M sodium tartrate, 10% glycerol, 15% ethylene glycol, 14% (w/v) PEG3350, pH 6.8, hanging drop, temperature 292K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
3.06 | 59.78 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 100.975 | α = 90 |
b = 106.935 | β = 90 |
c = 65.895 | γ = 90 |
Symmetry | |
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Space Group | P 21 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 | RAYONIX MX-300 | mirros | 2008-12-05 | M | SINGLE WAVELENGTH | |||||
2 | 1 | x-ray | M | MAD |
Radiation Source | |||||
---|---|---|---|---|---|
ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | APS BEAMLINE 21-ID-F | 0.97872 | APS | 21-ID-F |
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 | 2.29 | 50 | 72.2 | 0.065 | 21.4 | 5.4 | 23570 | 23570 | 5 | 5 |
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-Factor (Observed) | R-Work | R-Free | R-Free Selection Details | Mean Isotropic B | |||||||
X-RAY DIFFRACTION | MAD, MR | THROUGHOUT | 2.29 | 37.53 | 21609 | 1084 | 66.23 | 0.268 | 0.266 | 0.306 | RANDOM | 84.018 |
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] | |
-0.27 | -0.36 | 0.64 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
r_dihedral_angle_2_deg | 34.855 |
r_dihedral_angle_3_deg | 13.314 |
r_dihedral_angle_4_deg | 10.96 |
r_dihedral_angle_1_deg | 3.826 |
r_angle_refined_deg | 0.915 |
r_scangle_it | 0.527 |
r_scbond_it | 0.283 |
r_mcangle_it | 0.179 |
r_mcbond_it | 0.099 |
r_chiral_restr | 0.048 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 2902 |
Nucleic Acid Atoms | 896 |
Solvent Atoms | 81 |
Heterogen Atoms |
Software
Software | |
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Software Name | Purpose |
DENZO | data reduction |
SCALEPACK | data scaling |
PHASER | phasing |
SOLVE | phasing |
DM | phasing |
REFMAC | refinement |
PDB_EXTRACT | data extraction |
HKL-2000 | data collection |