5EKA
HU DNA-binding protein from Thermus thermophilus
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 1B8Z |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 4.3 | 293 | Protein solutions of 14-18 mg/ml, Buffer: 0.2 M Na-formate, Precipitating agent: 20%(w/v) PEG 3350 |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.3 | 51 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 55.464 | α = 90 |
b = 38.432 | β = 90 |
c = 44.861 | 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 | PIXEL | DECTRIS PILATUS 6M | BIMORPH MIRRORS | 2015-04-26 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | PETRA III, EMBL c/o DESY BEAMLINE P14 (MX2) | 0.97631 | PETRA III, EMBL c/o DESY | P14 (MX2) |
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 | 1.69 | 44.9 | 96.3 | 0.073 | 22.6 | 12 | 10742 | 20.4 |
Highest Resolution Shell | |||||||||||||||||||
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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 | 1.69 | 1.74 | 59.6 | 0.51 | 3 | 7.2 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Cross Validation method | Starting model | 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 | MOLECULAR REPLACEMENT | THROUGHOUT | 1B8Z | 1.69 | 44.86 | 10208 | 534 | 96.28 | 0.20077 | 0.19776 | 0.25612 | RANDOM | 31 |
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] | |
0.5 | -1.01 | 0.51 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
r_dihedral_angle_2_deg | 34.353 |
r_dihedral_angle_4_deg | 19.624 |
r_dihedral_angle_3_deg | 16.252 |
r_long_range_B_refined | 7.472 |
r_long_range_B_other | 7.4 |
r_dihedral_angle_1_deg | 5.011 |
r_scangle_other | 3.104 |
r_scbond_it | 1.929 |
r_scbond_other | 1.929 |
r_mcangle_other | 1.593 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 644 |
Nucleic Acid Atoms | |
Solvent Atoms | 96 |
Heterogen Atoms | 6 |
Software
Software | |
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Software Name | Purpose |
REFMAC | refinement |
XDS | data reduction |
Aimless | data scaling |
MOLREP | phasing |