8XB7
HosA transcriptional regulator from enteropathogenic Escherichia coli O127:H6 (strain E2348/69) bound with 4-hydroxy benzoic acid - Conformation II at 2.6 angstrom resolution
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 8PQ4 | HosA apoprotein model was used as template for molecular replacement. |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | MICROBATCH | 6.2 | 277.15 | Sodium phosphate dibasic/ Potassium phosphate monobasic, Sodium chloride, PEG 200 |
Crystal Properties | |
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Matthews coefficient | Solvent content |
3.17 | 61.19 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 66.64 | α = 90 |
b = 66.64 | β = 90 |
c = 94.49 | γ = 90 |
Symmetry | |
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Space Group | P 43 2 2 |
Diffraction
Diffraction Experiment | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol | |||||
1 | 1 | x-ray | 100 | IMAGE PLATE | RIGAKU RAXIS IV++ | Tube | 2023-09-12 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
---|---|---|---|---|---|
ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | ROTATING ANODE | RIGAKU FR-E+ SUPERBRIGHT | 1.541870 |
Data Collection
Overall | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Merge I (Observed) | Rrim I (All) | Rpim I (All) | CC (Half) | 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 | 2.6 | 66.64 | 99.6 | 0.084 | 0.092 | 0.036 | 0.998 | 16.1 | 6.1 | 6948 | 35.5317 |
Highest Resolution Shell | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R Merge I (Observed) | Rrim I (All) | Rpim I (All) | CC (Half) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | ||||||||
1 | 2.6 | 2.74 | 99 | 0.435 | 0.475 | 0.188 | 0.839 | 4.4 | 6.1 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Cross Validation method | Starting model | Resolution (High) | Resolution (Low) | Cut-off Sigma (F) | 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 | FREE R-VALUE | 8PQ4 | 2.6 | 54.46 | 1.38 | 6935 | 692 | 99.38 | 0.2075 | 0.203 | 0.2487 | Random selection | 40.92 |
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 |
f_dihedral_angle_d | 4.211 |
f_angle_d | 0.528 |
f_chiral_restr | 0.034 |
f_plane_restr | 0.004 |
f_bond_d | 0.002 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 1058 |
Nucleic Acid Atoms | |
Solvent Atoms | 13 |
Heterogen Atoms | 10 |
Software
Software | |
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Software Name | Purpose |
PHENIX | refinement |
SCALA | data scaling |
iMOSFLM | data reduction |
PHASER | phasing |