2W0J

Crystal structure of Chk2 in complex with NSC 109555, a specific inhibitor

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2CN5	PDB ENTRY 2CN5

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		7.8		0.1 M HEPES PH 7.8, 0.2 M MAGNESIUM NITRATE, 14% W/V PEG3350, 16% V/V ETHYLENE GLYCOL. PROTEIN WAS INCUBATED WITH 1MM INHIBITOR PRIOR TO CRYSTALLIZATION

Crystal Properties
Matthews coefficient	Solvent content
3.1	59.7

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 90.847	α = 90
b = 90.847	β = 90
c = 93.526	γ = 120

Symmetry
Space Group	P 32 2 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	CCD	MARRESEARCH		2007-06-10	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 22-ID		APS	22-ID

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge 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	2.05	50	99.9	0.06	25.9	7.4		28962		2

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.05	2.12	99.9		0.54	4.1	7.3

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 2CN5	2.05	50	26962	1432	99.9	0.217	0.215	0.246	RANDOM	34.99

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]
0.32	0.16		0.32		-0.49

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.759
r_dihedral_angle_4_deg	19.22
r_dihedral_angle_3_deg	16.427
r_dihedral_angle_1_deg	7.577
r_scangle_it	4.07
r_scbond_it	2.468
r_mcangle_it	1.898
r_angle_refined_deg	1.56
r_mcbond_it	1.04
r_angle_other_deg	0.937
r_chiral_restr	0.093
r_bond_refined_d	0.016
r_gen_planes_refined	0.006
r_bond_other_d	0.003
r_gen_planes_other	0.001
r_nbd_refined
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_refined
r_symmetry_vdw_other
r_symmetry_hbond_refined
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_mcangle_other
r_scbond_other
r_scangle_other
r_long_range_B_refined
r_long_range_B_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2252
Nucleic Acid Atoms
Solvent Atoms	133
Heterogen Atoms	34

Software

Software
Software Name	Purpose
REFMAC	refinement
HKL-3000	data reduction
SCALEPACK	data scaling
MOLREP	phasing