4YZC
Crystal structure of pIRE1alpha in complex with staurosporine
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 3P23 |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, SITTING DROP | 7.5 | 293 | The complex of pIRE1a (547-977) with staurosporine was prepared by mixing the protein with 0.5 mM staurosporine and incubated overnight on ice. The crystals were grown at 20C by vapor diffusion in sitting drop containing 2 ul of protein (13 mg/ml in 50 mM Hepes, pH 7.5, 200 mM NaCl, 5 mM DTT, 1 mM EDTA) and 2ul reservoir solution containing PEG 300 (30%-40%), 100 mM Hepes pH 7.5, 200 mM KCl. Small hexagonal plates appeared over 5-10 days and reached full size (0.05 X 0.75 X 0.15 mm) in ~20 days. The crystals were flash-frozen in liquid N2 directly from the crystallization drop. All diffraction data was collected at the Advanced Photon Source, Argonne National Laboratories, Life Sciences CAT, Sector 21 |
Crystal Properties | |
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Matthews coefficient | Solvent content |
3.2 | 61.6 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 49.337 | α = 90 |
b = 155.26 | β = 90 |
c = 155.643 | γ = 90 |
Symmetry | |
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Space Group | P 21 21 21 |
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 | CCD | ADSC QUANTUM 315 | 2012-02-17 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | APS BEAMLINE 21-ID-D | 0.97872 | APS | 21-ID-D |
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 | 2.4939 | 40.23 | 98.23 | 0.09722 | 13.36 | 6.5 | 41927 | 34.12 |
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 | 2.4939 | 2.583 | 88.06 | 0.1343 | 6.2 | 4710 |
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 | 3P23 | 2.494 | 40.225 | 1.35 | 41901 | 2116 | 98.17 | 0.2489 | 0.2468 | 0.2892 | random |
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] | |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
f_dihedral_angle_d | 12.676 |
f_angle_d | 0.648 |
f_chiral_restr | 0.036 |
f_plane_restr | 0.004 |
f_bond_d | 0.003 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 6036 |
Nucleic Acid Atoms | |
Solvent Atoms | 58 |
Heterogen Atoms | 70 |
Software
Software | |
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Software Name | Purpose |
PHENIX | refinement |
SCALEPACK | data scaling |
PDB_EXTRACT | data extraction |
MOLREP | phasing |