3EZH
Crystal Structure of the E. coli Histidine Kinase NarX Sensor Domain in Complex with Nitrate
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION | 8.5 | 277 | ammonium phosphate, pH 8.5, vapor diffusion, temperature 277K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.29 | 46.22 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 55.76 | α = 90 |
b = 55.76 | β = 90 |
c = 155.257 | γ = 90 |
Symmetry | |
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Space Group | P 43 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 | 2000-09-22 | M | MAD |
Radiation Source | |||||
---|---|---|---|---|---|
ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | NSLS BEAMLINE X4A | 0.9673, 0.9786, 0.9794, 0.9904 | NSLS | X4A |
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 | 1.7 | 25 | 98.4 | 0.046 | 20.1 | 27197 |
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) | |||||||||||
1.7 | 1.76 | 99 | 0.25 | 2648 |
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 | 1.7 | 24.94 | 27155 | 1355 | 97.9 | 0.217 | 0.258 | RANDOM | 32.3 |
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] | |
5.23 | 5.23 | -10.45 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
c_dihedral_angle_d | 18.9 |
c_scangle_it | 6.7 |
c_scbond_it | 4.78 |
c_mcangle_it | 3.22 |
c_mcbond_it | 2.52 |
c_angle_deg | 1.7 |
c_improper_angle_d | 1.23 |
c_bond_d | 0.017 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 1819 |
Nucleic Acid Atoms | |
Solvent Atoms | 255 |
Heterogen Atoms | 4 |
Software
Software | |
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Software Name | Purpose |
DENZO | data reduction |
SCALEPACK | data scaling |
SOLVE | phasing |
DM | phasing |
CNS | refinement |
PDB_EXTRACT | data extraction |