2XEY

Crystal structure of checkpoint kinase 1 (Chk1) in complex with inhibitors


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 2WMWPDB ENTRY 2WMW

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1DL-MALIC ACID/PEG3350
Crystal Properties
Matthews coefficientSolvent content
2.754.9

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 44.97α = 90
b = 65.66β = 93.91
c = 57.96γ = 90
Symmetry
Space GroupP 1 21 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDRIGAKU CCD2006-06-15MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1ROTATING ANODERIGAKU MICROMAX-007 HF

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Merge I (Observed)Net I Over Average Sigma (I)RedundancyNumber Reflections (All)Number Reflections (Observed)Observed Criterion Sigma (F)Observed Criterion Sigma (I)B (Isotropic) From Wilson Plot
12.743.492.40.116.12.586381.541.62
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R Merge I (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
12.72.8595.80.51.52.4

Refinement

Statistics
Diffraction IDStructure Solution MethodStarting modelResolution (High)Resolution (Low)Cut-off Sigma (F)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTPDB ENTRY 2WMW2.743.3951.38861640691.90.22160.21940.2655
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]
-9.6983-0.91630.52979.1686
RMS Deviations
KeyRefinement Restraint Deviation
f_dihedral_angle_d17.6
f_angle_d1.228
f_chiral_restr0.106
f_bond_d0.013
f_plane_restr0.012
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms2054
Nucleic Acid Atoms
Solvent Atoms11
Heterogen Atoms23

Software

Software
Software NamePurpose
PHENIXrefinement
MOSFLMdata reduction
SCALAdata scaling
PHASERphasing