7A22

Crystal structure of human protein kinase CK2alpha' (CSNK2A2 gene product) in complex with the ATP-competitive inhibitor 5,6,7-tribromo-1H-triazolo[4,5-b]pyridine


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, SITTING DROP293Reservoir composition: 28 % (w/v) PEG6000, 0.9 M LiCl, 0.1 M, Tris/HCl, pH 8.5; drop composition prior to equilibration: 0.01 ml reservoir solution + 0.02 ml CK2alpha' (mutant Cys336Ser)/inhibitor MB002 mixture (0.180 ml 6 mg/ml CK2alpha'Cys336Ser, 0.5 M NaCl, 25 mM Tris/HCl, pH 8.5, mixed and pre-equilibrated with 0.02 ml 10 mM MB002 in dimethyl sulfoxide); the initial inhibitor MB002 was replaced by the inhibitor 5,6,7-tribromo-1H-triazolo[4,5-b]pyridine by extensive crystal soaking.
Crystal Properties
Matthews coefficientSolvent content
2.6353.31

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 46.501α = 113.147
b = 47.696β = 90.46
c = 50.571γ = 90.27
Symmetry
Space GroupP 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100PIXELDECTRIS PILATUS 2M2018-11-14MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONESRF BEAMLINE ID23-20.87313ESRFID23-2

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
11.00846.570.80.0710.0710.0770.030.99811.76.414910811.4
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)
11.0081.1060.9910.9911.1140.4950.5551.5

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 DIFFRACTIONAB INITIO PHASINGFREE R-VALUE1.0146.51.96149102149570.770.13820.13790.16617.17
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_d15.0023
f_angle_d1.353
f_chiral_restr0.0948
f_bond_d0.012
f_plane_restr0.0097
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms2764
Nucleic Acid Atoms
Solvent Atoms321
Heterogen Atoms64

Software

Software
Software NamePurpose
XDSdata reduction
Aimlessdata scaling
Arcimboldophasing
PHENIXrefinement