Experiment: 8Q9S

STRUCTURE OF PROTEIN KINASE CK2 CATALYTIC SUBUNIT (ISOFORM CK2ALPHA'; CSNK2A2 GENE PRODUCT) IN COMPLEX WITH THE INHIBITOR SGC-CK2-1

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	6HMQ

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	8.5	293	THE CK2ALPHA' SOLUTION AFTER PROTEIN PURIFICATION (5 MG/ML CK2ALPHA' IN 500 MM NACL, 25 MM TRIS/HCl, PH 8.5) WAS MIXED IN 1:10 VOLUME RATIO WITH 10 MM SOLUTION OF THE INHIBITOR MB002 IN DMSO. THIS SOLUTION WAS MIXED IN 2:1 RATIO WITH RESERVOIR SOLUTION [900 MM LICL, 28 % (W/V) PEG 6000, 250 MM TRIS/HCL, PH 8.5] IN SITTING DROP PLATES (VAPOUR DIFFUSION). THE CRYSTAL GROWTH WAS INDUCED BY MICROSEEDING. THE CRYSTALS WERE OPTIMIZED BY MACROSEEDING. A CRYSTAL WAS PURGED TWICE WITH RESERVOIR SOLUTION BEFORE ADDING SGC-CK2-1 (10 MM IN DMSO) TO A FINAL CONCENTRATION OF 2.5 MM TO THE CRYSTAL MOTHOR LIQUOR FOR EXTENSIVE SOAKING AND REPLACEMENT OF THE INITIAL INHIBITOR MB002 BY SGC-CK2-1. ALL STEPS WERE PERFORMED AT A TEMPERATURE OF 293 K.

Crystal Properties
Matthews coefficient	Solvent content
2.62	53.05

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 46.217	α = 66.83
b = 47.682	β = 89.43
c = 50.562	γ = 88.93

Symmetry
Space Group	P 1

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		2023-04-17	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	PETRA III, EMBL c/o DESY BEAMLINE P13 (MX1)	0.97624	PETRA III, EMBL c/o DESY	P13 (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)	Redundancy	Number Reflections (All)	Number Reflections (Observed)	Observed Criterion Sigma (F)	Observed Criterion Sigma (I)	B (Isotropic) From Wilson Plot
1	1.352	46.483	65.3	0.097	0.097	0.104	0.057	0.997	7.8	7.2		56703			19.46

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	1.352	1.519	11.1		1.482	1.482	1.598	0.594	0.589	1.6	7.1

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	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	1.352	32.72	1.96	56688	1989	65.26	0.1366	0.1354	0.1357	0.1688	0.1674	26.58

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	13.3932
f_angle_d	0.8858
f_chiral_restr	0.0762
f_plane_restr	0.0101
f_bond_d	0.008

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2759
Nucleic Acid Atoms
Solvent Atoms	243
Heterogen Atoms	36

Software

Software
Software Name	Purpose
autoPROC	data processing
PHENIX	phasing
PHENIX	refinement