2GGV

Crystal structure of the West Nile virus NS2B-NS3 protease, His51Ala mutant

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.5	298	30% PEG 1500, 0.1M TRIS, 0.2M lithium cloride, 2mM mercaptoethanol, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
1.94	36.47

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 56.745	α = 90
b = 56.745	β = 90
c = 103.72	γ = 120

Symmetry
Space Group	P 64

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 4		2005-09-20	M	SINGLE WAVELENGTH
2	1	x-ray	100	CCD	ADSC QUANTUM 4		2005-10-10	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 12.3.1	1.0	ALS	12.3.1
2	SYNCHROTRON	NSLS BEAMLINE X26C	0.9779, 0.9785, 0.960	NSLS	X26C

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	1.8	49.15	98	0.055	0.055	7.7	7.6	17285	17285			33

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	1.8	1.9	98		0.6	0.6	1.2	6.5	2481

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MAD	THROUGHOUT	1.8	49.15	17557	17282	906	98.43	0.193	0.193	0.191	0.228	RANDOM	36.717

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]
1.53	0.76		1.53		-2.29

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.061
r_dihedral_angle_4_deg	18.505
r_dihedral_angle_3_deg	12.623
r_dihedral_angle_1_deg	6.409
r_scangle_it	3.648
r_scbond_it	2.411
r_mcangle_it	1.84
r_angle_refined_deg	1.426
r_mcbond_it	1.109
r_nbtor_refined	0.304
r_nbd_refined	0.199
r_symmetry_vdw_refined	0.18
r_xyhbond_nbd_refined	0.136
r_symmetry_hbond_refined	0.115
r_chiral_restr	0.101
r_bond_refined_d	0.013
r_gen_planes_refined	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1648
Nucleic Acid Atoms
Solvent Atoms	90
Heterogen Atoms

Software

Software
Software Name	Purpose
REFMAC	refinement
PDB_EXTRACT	data extraction
ADSC	data collection
MOSFLM	data reduction
SHELXS	phasing