7B8H

Monoclinic structure of human protein kinase CK2 catalytic subunit in complex with a heparin oligo saccharide


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, SITTING DROP293.151 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
Matthews coefficientSolvent content
1.9838

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 58.76α = 90
b = 45.19β = 111.94
c = 63.46γ = 90
Symmetry
Space GroupP 1 21 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100PIXELDECTRIS PILATUS 2M-F2015-07-02MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONSLS BEAMLINE X06DA0.8SLSX06DA

Data Collection

Overall
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)RedundancyNumber Reflections (All)Number Reflections (Observed)Observed Criterion Sigma (F)Observed Criterion Sigma (I)B (Isotropic) From Wilson Plot
11.3434.7998.560.03890.03890.04210.016121.176.868560
Highest Resolution Shell
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)RedundancyNumber Unique Reflections (All)
11.341.38897.470.73750.73750.79870.3050.7776.7

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodResolution (High)Resolution (Low)Cut-off Sigma (F)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeMean Isotropic B
X-RAY DIFFRACTIONSADFREE R-VALUE1.3434.7881.3768560137998.570.15390.15360.1639
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
KeyRefinement Restraint Deviation
f_dihedral_angle_d24.117
f_angle_d1.179
f_chiral_restr0.091
f_bond_d0.011
f_plane_restr0.008
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms2779
Nucleic Acid Atoms
Solvent Atoms331
Heterogen Atoms102

Software

Software
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XSCALEdata scaling
PHENIXphasing