7B8H
Monoclinic structure of human protein kinase CK2 catalytic subunit in complex with a heparin oligo saccharide
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, SITTING DROP | 293.15 | 1 microliter protein stock solution (8 mg/ml CK2alpha, 2 mM Heparin dodecasaccharide, 285.7 mM NaCl, 15 mM Tris, pH 8.5) was mixed with 2.5 microliter reservoir solution (32 %(w/v) PEG4000, 0.2 M malonate, 0.1 M Tris, pH 7.5). The resulting drop was equilibrated against 800 microliter reservoir solution. After equilibration the crystallization process was initialized by addition of 150 nanoliter micro seeding suspension. CK2alpha/heparin crystals grown in this way were prepared for cryo diffractometry by soaking them into a cryo solution consisting of 32 % (w/v) PEG4000, 0.2 M NaCl, 0.5 mM Heparin dodecasaccharide. |
Crystal Properties | |
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Matthews coefficient | Solvent content |
1.98 | 38 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 58.76 | α = 90 |
b = 45.19 | β = 111.94 |
c = 63.46 | γ = 90 |
Symmetry | |
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Space Group | P 1 21 1 |
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 2M-F | 2015-07-02 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | SLS BEAMLINE X06DA | 0.8 | SLS | X06DA |
Data Collection
Overall | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Merge I (Observed) | R Sym 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 | 1.34 | 34.79 | 98.56 | 0.0389 | 0.0389 | 0.0421 | 0.016 | 1 | 21.17 | 6.8 | 68560 |
Highest Resolution Shell | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R Merge I (Observed) | R-Sym I (Observed) | Rrim I (All) | Rpim I (All) | CC (Half) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | |||||||
1 | 1.34 | 1.388 | 97.47 | 0.7375 | 0.7375 | 0.7987 | 0.305 | 0.777 | 6.7 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Cross Validation method | 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 | Mean Isotropic B | |||||||
X-RAY DIFFRACTION | SAD | FREE R-VALUE | 1.34 | 34.788 | 1.37 | 68560 | 1379 | 98.57 | 0.1539 | 0.1536 | 0.1639 |
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 | 24.117 |
f_angle_d | 1.179 |
f_chiral_restr | 0.091 |
f_bond_d | 0.011 |
f_plane_restr | 0.008 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 2779 |
Nucleic Acid Atoms | |
Solvent Atoms | 331 |
Heterogen Atoms | 102 |
Software
Software | |
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Software Name | Purpose |
PHENIX | refinement |
XDS | data reduction |
XSCALE | data scaling |
PHENIX | phasing |