Experiment: 4FBX

Complex structure of human protein kinase CK2 catalytic subunit crystallized in the presence of a bisubstrate inhibitor

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP		293	The concentrated enzyme solution contained 6.2 mg/ml protein dissolved in 500 mM NaCl, 25 mM Tris/HCl, pH 8.5. Nine volume parts of this protein stock solution were mixed with one part 12 mM ARC-1154 dissolved in 100% dimethyl sulfoxide. The CK2alpha1-335/ARC-1154 mixture was incubated for 30 min at room temperature. The best crystals grew with a reservoir solution composed of 4.4 M NaCl, 100 mM citric acid, pH 5.25 and mixing 2 microliter of this reservoir solution with microliter CK2alpha1-335/ARC-1154 mixture, VAPOR DIFFUSION, SITTING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.16	42.98

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 72.114	α = 90
b = 72.114	β = 90
c = 135.056	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	CCD	AGILENT ATLAS CCD		2010-12-14	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SEALED TUBE	OTHER	1.5418

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	R Sym I (Observed)	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	2.33	32.25	99.9	0.095	0.095	18.8	8	15941	15925			38.8

Refinement

Statistics
Diffraction ID	Structure Solution 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)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	2.33	31.807	1.35	15868	924	99.9	0.2018	0.1988	0.1943	0.2492	0.2465	Random

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]
-0.0349			-0.0349		0.0698

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	13.76
f_angle_d	0.677
f_chiral_restr	0.054
f_bond_d	0.003
f_plane_restr	0.003

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2829
Nucleic Acid Atoms
Solvent Atoms	122
Heterogen Atoms	5

Software

Software
Software Name	Purpose
PHENIX	model building
PHENIX	refinement
XDS	data reduction
SCALA	data scaling
PHENIX	phasing