3MKI
Crystal Structure of Ketosteroid Isomerase D38ED99N from Pseudomonas Testosteroni (tKSI)
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 8CHO | PDB ENTRY 8CHO |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, SITTING DROP | 7.2 | 298 | 1.2 M ammonium sulfate, 20 mM potassium phosphate, 1 mM EDTA, 2 mM DTT, pH 7.2, vapor diffusion, sitting drop, temperature 298K, VAPOR DIFFUSION, SITTING DROP |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.77 | 55.56 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 64.041 | α = 90 |
b = 64.041 | β = 90 |
c = 502.22 | γ = 120 |
Symmetry | |
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Space Group | P 61 2 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 | 2010-02-06 | SINGLE WAVELENGTH | |||||||
2 | 1 | x-ray | 100 | CCD | MARMOSAIC 325 mm CCD | 2010-01-06 | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | SSRL BEAMLINE BL9-1 | 0.98 | SSRL | BL9-1 |
2 | SYNCHROTRON | SSRL BEAMLINE BL9-2 | 0.98 | SSRL | BL9-2 |
Data Collection
Overall | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Sym 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 | ||||||||
1,2 | 2 | 29.909 | 99.6 | 0.162 | 21.8 | 26.4 | 43283 | 43283 | 21.4 |
Highest Resolution Shell | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R-Sym I (Observed) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | |||||||||||
1,2 | 2 | 2.11 | 97.3 | 0.812 | 4.7 | 21.4 | 5933 |
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 8CHO | 2 | 29.9 | 42975 | 42975 | 2159 | 99.58 | 0.169 | 0.169 | 0.167 | 0.213 | RANDOM | 21.123 |
Temperature Factor Modeling | ||||||
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Anisotropic B[1][1] | Anisotropic B[1][2] | Anisotropic B[1][3] | Anisotropic B[2][2] | Anisotropic B[2][3] | Anisotropic B[3][3] | |
1.17 | 0.59 | 1.17 | -1.76 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
r_dihedral_angle_2_deg | 34.288 |
r_dihedral_angle_4_deg | 20.605 |
r_dihedral_angle_3_deg | 13.819 |
r_dihedral_angle_1_deg | 6.247 |
r_scangle_it | 5.477 |
r_scbond_it | 3.541 |
r_angle_refined_deg | 1.96 |
r_mcangle_it | 1.944 |
r_mcbond_it | 1.159 |
r_chiral_restr | 0.154 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 3760 |
Nucleic Acid Atoms | |
Solvent Atoms | 398 |
Heterogen Atoms | 135 |
Software
Software | |
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Software Name | Purpose |
SCALA | data scaling |
MOLREP | phasing |
REFMAC | refinement |
PDB_EXTRACT | data extraction |
Blu-Ice | data collection |
XDS | data reduction |