Experiment: 2HWK

Crystal Structure of Venezuelan Equine Encephalitis Alphavirus nsP2 Protease Domain

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8	290	3.0 M Ammonium Formate, 2% 2-Methyl-2, 4-pentanediol, 1% glycerol, 200 uM Zinc Acetate, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 290K

Crystal Properties
Matthews coefficient	Solvent content
2.53	51.46

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 47.47	α = 90
b = 72.58	β = 90
c = 106.66	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	CCD	MAR CCD 165 mm	Vertical collimating mirror, Toroidal focusing mirror, monochromator	2005-12-02	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	CAMD BEAMLINE GCPCC	1.3808	CAMD	GCPCC

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	R Sym 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	2.45	43.37	99.7	0.094	0.094	14.2	5.6	14092	14092		-3	29.3

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	2.45	2.49	98.6		0.286			653

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Cut-off Sigma (I)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	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	MIR	THROUGHOUT	2.45	43.37	-3	14090	14090	662	99.7	0.208	0.208	0.192	0.1923	0.242	0.2417	THICK SHELLS	35.3

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]
-0.6			-0.77		1.37

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	19.3
c_improper_angle_d	1.78
c_angle_deg	1.6
c_bond_d	0.012

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2552
Nucleic Acid Atoms
Solvent Atoms	34
Heterogen Atoms

Software

Software
Software Name	Purpose
CNS	refinement
HKL-2000	data reduction
HKL-2000	data scaling
SHARP	phasing