3JZ3
Structure of the cytoplasmic segment of histidine kinase QseC
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 7.5 | 288 | 8-10 mg/ml protein with 27-30% (NH4)2SO4, 0.1 M HEPES, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 288K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.23 | 44.91 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 70.737 | α = 90 |
b = 70.737 | β = 90 |
c = 176.573 | γ = 90 |
Symmetry | |
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Space Group | P 41 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 | 77 | CCD | ADSC QUANTUM 315r | 2008-08-28 | M | MAD | ||||||
2 | 1 | CCD | ADSC QUANTUM 315r | 2008-08-28 |
Radiation Source | |||||
---|---|---|---|---|---|
ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | ALS BEAMLINE 8.2.1 | 0.96789 | ALS | 8.2.1 |
2 | SYNCHROTRON | ALS BEAMLINE 8.2.1 | 0.9794 | ALS | 8.2.1 |
Data Collection
Overall | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ID # | Resolution (High) | Resolution (Low) | Percent Possible (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 | 2.5 | 50 | 99.9 | 16338 | 16317 | 1 | 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) | |||||||||||
1 | 2.5 | 2.59 | 100 | 0.294 | 10.4 | 13.8 | 1565 |
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 (Depositor) | R-Work (DCC) | R-Free (Depositor) | R-Free (DCC) | R-Free Selection Details | Mean Isotropic B | |||||
X-RAY DIFFRACTION | MAD | THROUGHOUT | 2.5 | 34.69 | 14136 | 764 | 99.9 | 0.22996 | 0.22826 | 0.2267 | 0.26234 | 0.2592 | RANDOM | 44.119 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
r_dihedral_angle_2_deg | 38.781 |
r_dihedral_angle_4_deg | 16.088 |
r_dihedral_angle_3_deg | 14.365 |
r_dihedral_angle_1_deg | 4.643 |
r_scangle_it | 4.376 |
r_mcangle_it | 3.853 |
r_scbond_it | 2.803 |
r_mcbond_it | 2.335 |
r_angle_refined_deg | 0.909 |
r_nbtor_refined | 0.295 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 2308 |
Nucleic Acid Atoms | |
Solvent Atoms | 44 |
Heterogen Atoms | 5 |
Software
Software | |
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Software Name | Purpose |
HKL-2000 | data collection |
SOLVE | phasing |
REFMAC | refinement |
HKL-2000 | data reduction |
HKL-2000 | data scaling |