7B8H

Monoclinic structure of human protein kinase CK2 catalytic subunit in complex with a heparin oligo saccharide

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP		293.15	1 microliter protein stock solution (8 mg/ml CK2alpha, 2 mM Heparin dodecasaccharide, 285.7 mM NaCl, 15 mM Tris, pH 8.5) was mixed with 2.5 microliter reservoir solution (32 %(w/v) PEG4000, 0.2 M malonate, 0.1 M Tris, pH 7.5). The resulting drop was equilibrated against 800 microliter reservoir solution. After equilibration the crystallization process was initialized by addition of 150 nanoliter micro seeding suspension. CK2alpha/heparin crystals grown in this way were prepared for cryo diffractometry by soaking them into a cryo solution consisting of 32 % (w/v) PEG4000, 0.2 M NaCl, 0.5 mM Heparin dodecasaccharide.

Crystal Properties
Matthews coefficient	Solvent content
1.98	38

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 58.76	α = 90
b = 45.19	β = 111.94
c = 63.46	γ = 90

Symmetry
Space Group	P 1 21 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 2M-F		2015-07-02	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SLS BEAMLINE X06DA	0.8	SLS	X06DA

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	1.34	34.79	98.56	0.0389	0.0389	0.0421	0.016	1	21.17	6.8		68560

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	1.34	1.388	97.47		0.7375	0.7375	0.7987	0.305	0.777		6.7

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	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	SAD	FREE R-VALUE	1.34	34.788	1.37	68560	1379	98.57	0.1539	0.1536	0.1639

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	24.117
f_angle_d	1.179
f_chiral_restr	0.091
f_bond_d	0.011
f_plane_restr	0.008

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2779
Nucleic Acid Atoms
Solvent Atoms	331
Heterogen Atoms	102

Software

Software
Software Name	Purpose
PHENIX	refinement
XDS	data reduction
XSCALE	data scaling
PHENIX	phasing

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.