8QCD

STRUCTURE OF PROTEIN KINASE CK2 CATALYTIC SUBUNIT (ISOFORM CK2ALPHA'; CSNK2A2 GENE PRODUCT) IN COMPLEX WITH THE INHIBITOR 4,5,6,7-TETRABROMOBENZOTRIAZOLE


X-RAY DIFFRACTION

Starting Model(s)

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

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, SITTING DROP8.5293THE CK2ALPHA' SOLUTION AFTER PROTEIN PURIFICATION (5 MG/ML CK2ALPHA' IN 500 MM NACL, 25 MM TRIS/HCl, PH 8.5) WAS MIXED IN A 1:10 RATIO WITH A 20 MM SOLUTION OF 4,5,6,7-TETRABROMOBENZOTRIAZOLE (TBBT) 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, 100 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.
Crystal Properties
Matthews coefficientSolvent content
2.6152.88

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 46.338α = 113.48
b = 47.701β = 90.45
c = 50.342γ = 90.17
Symmetry
Space GroupP 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100PIXELDECTRIS PILATUS 6M2022-04-22MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONESRF BEAMLINE ID23-10.8856ESRFID23-1

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
11.0346.33676.90.1280.9795.72.61492961.45
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)CC (Half)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
11.0331.070.561

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 DIFFRACTIONMOLECULAR REPLACEMENTFREE R-VALUE1.0324.921.96149265201476.90.14390.14370.15627.66
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_d13.1231
f_angle_d1.0517
f_chiral_restr0.0906
f_plane_restr0.0132
f_bond_d0.0094
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms2759
Nucleic Acid Atoms
Solvent Atoms397
Heterogen Atoms25

Software

Software
Software NamePurpose
autoPROCdata reduction
autoPROCdata scaling
PHASERphasing
PHENIXrefinement