4YZ9
Crystal Structure of human phosphorylated IRE1alpha in complex with a type III kinase inhibitor (GSK2850163A)
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 | 293 | Crystals of pIRE1alpha (547 - 977) with GSK2850163 were prepared by mixing pIRE1alpha with 0.5 mM GSK2850163 and incubating overnight on ice. The crystals were grown at 20 C by vapor diffusion in sitting drops containing 2 ul of protein (13 mg/ml in 50 mM Hepes, pH 7.5, 200 mM NaCl, 5 mM DTT, 1 mM EDTA , 0.5 mM GSK2850163, 0.25% DMSO ) and 2 ul reservoir solution containing PEG 3350 (16%-22%), 100 mM Hepes pH 7.0, 200 mM Ca2+ acetate. The crystals were thick rods that appeared over 2-5 days and reached full size (0.05 X 0.025 X 0.3 mm) in 2 weeks. Seeding was used to improve crystal quality. The pIRE1alpha + GSK2850163 crystals were frozen in a solution of 20% ethylene glycol, 22% PEG 3350, 0.2 M calcium acetate added in a stepwise manner to the protein drop before mounting the crystal on the loop. |
Crystal Properties | |
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Matthews coefficient | Solvent content |
3.01 | 59.12 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 244.004 | α = 90 |
b = 77.767 | β = 90 |
c = 88.313 | 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 | CCD | RAYONIX SX-165mm | 2011-10-04 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | ROTATING ANODE | RIGAKU MICROMAX-007 | 1.54 |
Data Collection
Overall | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Merge I (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 | 2.45 | 29.182 | 97.2 | 0.073 | 0.073 | 9 | 6.3 | 59737 | 2 | 44.87 |
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 | 2.45 | 2.54 | 89.7 | 0.592 | 3.1 | 6.3 | 5411 |
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 | 2.463 | 29.182 | 1.36 | 59654 | 3016 | 96.69 | 0.2378 | 0.2354 | 0.2829 | rqandom |
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 | 14.045 |
f_angle_d | 0.663 |
f_chiral_restr | 0.038 |
f_plane_restr | 0.005 |
f_bond_d | 0.003 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 8931 |
Nucleic Acid Atoms | |
Solvent Atoms | 80 |
Heterogen Atoms | 90 |
Software
Software | |
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Software Name | Purpose |
PHENIX | refinement |
SCALEPACK | data scaling |
PDB_EXTRACT | data extraction |
MOLREP | phasing |