7B8I

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


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 2PVR 

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, SITTING DROP293.15Prior to crystallization, the enzyme was incubated with heparin decasaccharide; the composition of this preincubation solution was 5 mg/ml CK2alpha1-335, 1.4 mM Heparin decasaccharide, 340 mM NaCl, 25 mM Tris/HCl, pH 8.5. 4 microliter of this enzyme/heparin mixture was mixed with 1 microliter reservoir solution. The composition of the reservoir solution was 32 % (w/v) PEG4000, 0.2 M Lithium sulfate, 0.1 M Tris/HCl, pH 7.5. As a preparation of X-ray diffraction data collection, the crystals were transferred to a cryo solution composed of 32 % (w/v) PEG4000, 10 % (v/v) glycerol, 0.2 M lithium sulfate, 0.5 mM Heparin decasaccharide, 0.1 M Tris/HCl, pH 7.5.
Crystal Properties
Matthews coefficientSolvent content
3.2261.78

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 128.401α = 90
b = 128.401β = 90
c = 124.154γ = 90
Symmetry
Space GroupP 43 21 2

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100PIXELDECTRIS PILATUS 2M-F2014-06-05MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONSLS BEAMLINE X06DA0.97795SLSX06DA

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
12.5545.498.430.085340.085340.092630.035540.99916.166.73391948.47
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)
12.552.64296.190.72340.72340.78770.30730.8022.576.4

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (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 DIFFRACTIONMOLECULAR REPLACEMENTFREE R-VALUE2PVR2.5545.3971.3633889169598.450.20570.2040.2396
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_d16.856
f_angle_d0.534
f_chiral_restr0.044
f_plane_restr0.004
f_bond_d0.002
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms5608
Nucleic Acid Atoms
Solvent Atoms143
Heterogen Atoms162

Software

Software
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XSCALEdata scaling
PHASERphasing