Experiment: 7A4C

Crystal structure of human protein kinase CK2alpha (CSNK2A1 gene product) in complex with the ATP-competitive inhibitor 5,6,7-tribromo-1H-triazolo[4,5-b]pyridine

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2PVR

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP		293.15	1 MIKROLITER OF THE CK2ALPHA/INHIBITOR MIXTURE (COMPOSITION: 7 MG/ML CK2ALPHA ENZYME, 1 MILLIMOLAR INHIBITOR, 10 % DIMETHYL SULFOXIDE, 450 MM NACL, 22.5 MM TRIS/HCL, PH 8.5) WAS MIXED WITH 1 MIKROLITER RESERVOIR SOLUTION (COMPOSITION: 25 % PEG3350, 0.2 M AMMONIUM SULPHATE, 0.1 M BIS-TRIS BUFFER, PH 5.5) FOLLOWED BY VAPOUR DIFFUSION EQUILIBRATION AGAINST THE RESERVOIR SOLUTION.

Crystal Properties
Matthews coefficient	Solvent content
3.22	61.83

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 127.681	α = 90
b = 127.681	β = 90
c = 126.296	γ = 90

Symmetry
Space Group	P 43 21 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	PIXEL	DECTRIS PILATUS 6M-F		2016-12-13	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID29	0.976251	ESRF	ID29

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)	Redundancy	Number Reflections (All)	Number Reflections (Observed)	Observed Criterion Sigma (F)	Observed Criterion Sigma (I)	B (Isotropic) From Wilson Plot
1	2.502	90.284	78	0.173	0.173	0.186	0.067	0.996	9.2	7.5		28550			43.98

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)	Redundancy	Number Unique Reflections (All)
1	2.502	2.725	17.5		1.007	1.007	1.132	0.507	0.617	1.4	4.8

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (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 DIFFRACTION	MOLECULAR REPLACEMENT	FREE R-VALUE	2PVR	2.502	89.79	1.35	28526	1139	77.89	0.2072	0.2062	0.2063	0.2323	0.2327	45.89

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
Key	Refinement Restraint Deviation
f_dihedral_angle_d	12.864
f_angle_d	0.4696
f_chiral_restr	0.042
f_plane_restr	0.0031
f_bond_d	0.0016

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	5634
Nucleic Acid Atoms
Solvent Atoms	175
Heterogen Atoms	72

Software

Software
Software Name	Purpose
XDS	data reduction
Aimless	data scaling
PHASER	phasing
PHENIX	refinement