6HME

LOW-SALT STRUCTURE OF PROTEIN KINASE CK2 CATALYTIC SUBUNIT (ISOFORM CK2ALPHA; CSNK2A1 gene product) IN COMPLEX WITH THE INDENOINDOLE-TYPE INHIBITOR THN27


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 5ONI 

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, SITTING DROP6.5293.15180 MICROLITERS OF ENZYME SOLUTION (6 MG/ML CK2ALPHA, 0.025 M TRIS/HCL, PH 8.5, 0.5 M NACL) WERE MIXED WITH 20 MICROLITERS OF INHIBITOR STOCK SOLUTION (0.010 M INHIBITOR THN27 IN DMSO). THIS MIXTURE WAS INCUBATED FOR 30 MIN AT ROOM TEMPERATURE. THE RESERVOIR SOLUTION OF THE CRYSTALLIZATION EXPERIMENT WAS 0.2 M AMMONIUM SULFATE, 0.1 M SODIUM CACODYLATE TRIHYDRATE, PH 6.5, 30% (W/V) PEG 8,000. PRIOR TO EQUILIBRATION THE CRYSTALLIZATION DROP WAS COMPOSED OF 10 MICROLITERS RESERVOIR SOLUTION PLUS 20 MICROLITERS ENZYME/INHIBITOR MIXTURE.
Crystal Properties
Matthews coefficientSolvent content
3.1160.39

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 126.37α = 90
b = 126.37β = 90
c = 124.63γ = 90
Symmetry
Space GroupP 43 21 2

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100PIXELDECTRIS PILATUS 6M2018-06-18MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONPETRA III, EMBL c/o DESY BEAMLINE P13 (MX1)0.9794PETRA III, EMBL c/o DESYP13 (MX1)

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
11.8589.35799.820.055010.055010.059940.023390.99916.126.58617240.69
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)
11.851.91699.881.7011.7011.8430.70530.5350.966.8

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-VALUE5ONI1.8589.3571.3486126172499.820.17540.17490.197
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_d16.33
f_angle_d0.835
f_chiral_restr0.054
f_bond_d0.006
f_plane_restr0.005
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms5608
Nucleic Acid Atoms
Solvent Atoms389
Heterogen Atoms126

Software

Software
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XSCALEdata scaling
PHASERphasing
Cootmodel building