2D45
Crystal structure of the MecI-mecA repressor-operator complex
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 1XSD | PDB entry 1XSD |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 7.2 | 277 | 24% PEG 400, 150mM magnesium chloride, 80mM Na-HEPES, pH 7.2, VAPOR DIFFUSION, HANGING DROP, temperature 277K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.6 | 56.89 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 61.464 | α = 90 |
b = 61.464 | β = 90 |
c = 419.777 | γ = 120 |
Symmetry | |
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Space Group | P 32 1 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 | CUSTOM-MADE | 2004-06-25 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | NSLS BEAMLINE X12C | 1.1000 | NSLS | X12C |
Data Collection
Overall | |||||||||||||||||||
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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 | 3.8 | 40 | 99.8 | 0.081 | 33.9 | 9.6 | 9456 | 9437 | 1 |
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) | |||||||||||
3.8 | 3.94 | 98.5 | 0.47 | 2.9 | 5.5 | 917 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Cross Validation method | Starting model | Resolution (High) | Resolution (Low) | Number Reflections (All) | Number Reflections (Observed) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Factor (All) | R-Factor (Observed) | R-Work | R-Free | R-Free Selection Details | Mean Isotropic B | ||||
X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | THROUGHOUT | PDB entry 1XSD | 3.8 | 40 | 9392 | 9168 | 493 | 97.6 | 0.267 | 0.267 | 0.264 | 0.297 | RANDOM |
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] | |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
c_angle_deg | 1.6 |
c_bond_d | 0.017 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 3958 |
Nucleic Acid Atoms | 1166 |
Solvent Atoms | 80 |
Heterogen Atoms |
Software
Software | |
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Software Name | Purpose |
HKL-2000 | data collection |
SCALEPACK | data scaling |
AMoRE | phasing |
CNS | refinement |
HKL-2000 | data reduction |