1AQ1
HUMAN CYCLIN DEPENDENT KINASE 2 COMPLEXED WITH THE INHIBITOR STAUROSPORINE
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 1HCK | PDB ENTRY 1HCK |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION | 7.4 | PROTEIN 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 | |
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Matthews coefficient | Solvent content |
2 | 32 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 53.5 | α = 90 |
b = 70.5 | β = 90 |
c = 73.6 | γ = 90 |
Symmetry | |
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Space Group | P 21 21 21 |
Diffraction
Diffraction Experiment | ||||||||||||||
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ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol | |||||
1 | 1 | x-ray | 100 | IMAGE PLATE AREA DETECTOR | MARRESEARCH | MIRROR | 1996-12-22 | M |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | ELETTRA BEAMLINE 5.2R | ELETTRA | 5.2R |
Data Collection
Overall | |||||||||||||||||||
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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 | 20 | 92.9 | 0.1 | 5.7 | 3 | 17731 |
Highest Resolution Shell | |||||||||||||||||||
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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) | |||||||||||
2 | 2.1 | 89.4 | 0.5 | 1.4 | 2.7 |
Refinement
Statistics | |||||||||||||||||||
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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-Work | R-Free | R-Free Selection Details | Mean Isotropic B | |||||||
X-RAY DIFFRACTION | DIFFERENCE FOURIER | FREE-R | PDB ENTRY 1HCK | 2 | 25 | 17721 | 919 | 92.9 | 0.22 | 0.26 | RANDOM |
Temperature Factor Modeling | ||||||
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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 | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 2230 |
Nucleic Acid Atoms | |
Solvent Atoms | 125 |
Heterogen Atoms | 35 |
Software
Software | |
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Software Name | Purpose |
CCP4 | model building |
REFMAC | refinement |
MOSFLM | data reduction |
CCP4 | data scaling |
CCP4 | phasing |