9T0U | pdb_00009t0u

STRUCTURE OF PROTEIN KINASE CK2 CATALYTIC SUBUNIT (ISOFORM CK2ALPHA'; CSNK2A2 gene product) IN COMPLEX WITH THE INDENOINDOLE-TYPE INHIBITOR 4b (AR14)


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 6HMQ 

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, SITTING DROP293THE CK2ALPHA' SOLUTION AFTER PROTEIN PURIFICATION (5 MG/ML CK2ALPHA' IN 500 MM NACL, 25 MM TRIS/HCl, PH 8.5) WAS MIXED IN A 1:20 RATIO WITH A 20 MM SOLUTION OF 4w (INDENOINDOLE-TYPE INHIBITOR) IN DMSO. AFTER INCUBATION ON ICE FOR 30 MIN AND CENTRIFUGATION (16100 TIMES G FOR 2 MIN AT ROOM TEMPERATUR) 10 MIKROLITER OF THE SUPERNATANT WERE MIXED WITH 5 MIKORLITER OF THE RESERVOIR SOLUTION [900 MM LICL, 28% (W/V) PEG 6000, 250 MM TRIS/HCl, PH 8.5]. AFTER EQUILIBRATION, MICROSEEDING WAS CARRIED OUT TO INDUCE CRYSTAL GROWTH. SMALL CRYSTALS APPEARED AFTER ONE WEEK. ONE OF THEM WAS USED AS A MACROSEED TRANSFERING IT TO A SECOND DROP PREPARED IN THE SAME MANNER AS THE FIRST ONE. ALL CRSTALLIZATION STEPS WERE PERFORMED AT A TEMPERATURE OF 293 K. THE CRYSTAL WAS PURGED EXTENSIVELY TO REMOVE 4w. AR14 WAS ADDED AT VERY HIGH CONCENTRATION AS SOLID COMPOUND (TO LIMIT OF DISSOLVING).
Crystal Properties
Matthews coefficientSolvent content
2.3547.76

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 46.23α = 113.575
b = 47.415β = 90.132
c = 50.271γ = 91.171
Symmetry
Space GroupP 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100PIXELDECTRIS EIGER X 16M2025-08-28MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONPETRA III, EMBL c/o DESY BEAMLINE P13 (MX1)0.97625PETRA III, EMBL c/o DESYP13 (MX1)

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Merge I (Observed)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
11.06946.2262.10.0560.99693.310751910.79
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R Merge I (Observed)CC (Half)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
11.0691.1980.5390.521.8

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-Work (Depositor)R-Work (DCC)R-Free (Depositor)R-Free (DCC)Mean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTFREE R-VALUE1.0746.221.96107380499262.020.13880.13710.14630.17640.177218.93
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_d13.1656
f_angle_d0.9254
f_chiral_restr0.075
f_plane_restr0.0102
f_bond_d0.0085
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms2759
Nucleic Acid Atoms
Solvent Atoms301
Heterogen Atoms21

Software

Software
Software NamePurpose
STARANISOdata scaling
PHENIXrefinement
XDSdata reduction
Aimlessdata scaling
PHASERphasing
autoPROCdata processing