4XIY
Crystal structure of ketol-acid reductoisomerase from Azotobacter
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 1NP3 | PDB entry 1NP3 |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, SITTING DROP | 5.5 | 0.25 M NaCl, 28 % PEG3350 and 0.1 M Bis-Tris, pH 5.5, strictly anaerobic |
Crystal Properties | |
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Matthews coefficient | Solvent content |
3.6 | 65.83 |
Crystal Data
Unit Cell | |
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Length ( ? ) | Angle ( ? ) |
a = 185.05 | ¦Á = 90 |
b = 185.05 | ¦Â = 90 |
c = 185.05 | ¦Ã = 90 |
Symmetry | |
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Space Group | P 21 3 |
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 | 2012-05-25 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
---|---|---|---|---|---|
ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | SLS BEAMLINE X06SA | 1.0000, 1.7448 | SLS | X06SA |
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 | 2.5 | 82.76 | 99.5 | 0.092 | 10.9 | 3.5 | 72509 |
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 | 2.5 | 2.64 | 99.9 | 0.513 | 2.6 | 3.6 |
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 | PDB entry 1NP3 | 2.5 | 55.79 | 68666 | 3656 | 99.2 | 0.19646 | 0.19392 | 0.24377 | RANDOM | 47.799 |
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 |
r_long_range_B_refined | 8.146 |
r_long_range_B_other | 8.146 |
r_scangle_other | 6.203 |
r_mcangle_it | 5.639 |
r_mcangle_other | 5.639 |
r_scbond_it | 3.963 |
r_scbond_other | 3.963 |
r_mcbond_it | 3.771 |
r_mcbond_other | 3.767 |
r_angle_refined_deg | 1.72 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 9964 |
Nucleic Acid Atoms | |
Solvent Atoms | 40 |
Heterogen Atoms | 48 |
Software
Software | |
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Software Name | Purpose |
REFMAC | refinement |
MOSFLM | data reduction |
SCALA | data scaling |
MOLREP | phasing |
SHELX | phasing |