Experiment: 4R8Q

Structure and substrate recruitment of the human spindle checkpoint kinase bub1

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	6.29	293	TO 15 MG/ML BUB1, ATP WAS ADDED TO A FINAL CONCENTRATION OF 10 MM. SITTING DROPS WERE MADE BY MIXING 1.5 MICROLITERS PROTEIN WITH 1.5 MICROLITERS CRYSTALLIZATION SOLUTION (20% W/V PEG 3350, 0.1 M SODIUM FORMATE PH 6.29, 25 MM DTT) AND EQUILIBRATING AGAINST 200 MICROLITERS OF RESERVOIR SOLUTION. LARGE SINGLE CRYSTALS WERE OBTAINED BY REPEATED SEEDING. THE CRYSTALS WERE CRYO-PROTECTED IN RESERVOIR SOLUTION SUPPLEMENTED WITH 18% V/V GLYCEROL AND THEN FLASH-COOLED IN LIQUID PROPANE, VAPOR DIFFUSION, SITTING DROP, TEMPERATURE 293K, vapor diffusion, sitting drop

Crystal Properties
Matthews coefficient	Solvent content
2.26	45.66

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 108.768	α = 90
b = 147.632	β = 90
c = 47.196	γ = 90

Symmetry
Space Group	C 2 2 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	CCD	ADSC QUANTUM 315r	monochromator	2005-04-11		SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 19-ID	0.97954	APS	19-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	2.31	50	97.7	0.037	14.3	5.4	16738	16738	1	1	30.06

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	2.32	2.36	100		0.731		5.6	862

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	SAD	2.31	32.506	1.34	16638	16638	1288	97.14	0.2256	0.2224	0.2273	0.2641	0.2684	random	48.1761

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]

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	13.394
f_angle_d	0.822
f_chiral_restr	0.03
f_bond_d	0.005
f_plane_restr	0.003

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2693
Nucleic Acid Atoms
Solvent Atoms	16
Heterogen Atoms	29

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
PHENIX	refinement
PDB_EXTRACT	data extraction
HKL-2000	data collection
HKL-2000	data reduction
HKL-2000	data scaling
SHELXS	phasing