1AQ1

HUMAN CYCLIN DEPENDENT KINASE 2 COMPLEXED WITH THE INHIBITOR STAUROSPORINE


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 1HCKPDB ENTRY 1HCK

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION7.4PROTEIN AT 10MG/ML IN 15MM NACL, 10MM HEPES, PH7.4, MIXED WITH WELL BUFFER (50MM AMMONIUM ACETATE, 10% PEG4K, 0.1M HEPES PH 7.4) IN EQUAL VOLUMES, THEN VAPOUR DIFFUSION AGAINST WELL BUFFER. CDK2 CRYSTALS WERE SOAKED FOR 20 HOURS IN A SOLUTION OF 0.5MM STAUROSPORINE IN 1X WELL BUFFER PREPARED FROM STOCKS 2X WELLBUFFER AND 10MM STAUROSPORINE IN 100% DMSO., vapor diffusion
Crystal Properties
Matthews coefficientSolvent content
232

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 53.5α = 90
b = 70.5β = 90
c = 73.6γ = 90
Symmetry
Space GroupP 21 21 21

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100IMAGE PLATE AREA DETECTORMARRESEARCHMIRROR1996-12-25M
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONELETTRA BEAMLINE 5.2RELETTRA5.2R

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
122092.90.15.7317731
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)
22.189.40.51.42.7

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONDIFFERENCE FOURIERFREE-RPDB ENTRY 1HCK2251772191992.90.220.26RANDOM
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]
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms2230
Nucleic Acid Atoms
Solvent Atoms125
Heterogen Atoms35

Software

Software
Software NamePurpose
CCP4model building
REFMACrefinement
MOSFLMdata reduction
CCP4data scaling
CCP4phasing