Experiment: 1AQ1

HUMAN CYCLIN DEPENDENT KINASE 2 COMPLEXED WITH THE INHIBITOR STAUROSPORINE

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1HCK	PDB ENTRY 1HCK

Crystallization

Crystalization Experiments
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
Matthews coefficient	Solvent content
2	32

Crystal Data

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

Symmetry
Space Group	P 21 21 21

Diffraction

Diffraction Experiment
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	1996-12-19	M

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ELETTRA BEAMLINE 5.2R		ELETTRA	5.2R

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	20	92.9	0.1	5.7	3		17731

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)
	2	2.1	89.4		0.5	1.4	2.7

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-Work (Depositor)	R-Free (Depositor)	R-Free (DCC)	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	0.2492	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]

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2230
Nucleic Acid Atoms
Solvent Atoms	125
Heterogen Atoms	35

Software

Software
Software Name	Purpose
CCP4	model building
REFMAC	refinement
MOSFLM	data reduction
CCP4	data scaling
CCP4	phasing