3BSA

Crystal Structure of HCV NS5B Polymerase with a Novel Pyridazinone Inhibitor

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.6	298	20% PEG 4K, 50 mM ammonium sulfate, 100 mM sodium acetate pH 4.7, 5 mM DTT. Transferred to pH 7.6 for soaking., VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.17	43.43

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 85.536	α = 90
b = 103.905	β = 90
c = 125.932	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		2006-03-04	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 14-ID-B		APS	14-ID-B

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	2.3	41.9	95.7			48377	48377

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-Factor (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	HCV POLYMERASE	2.3	41.88	48337	2394	95.7	0.244	0.244	0.242	0.299	RANDOM	38.183

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]
-3.5			8.53		-5.04

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	33.532
r_dihedral_angle_3_deg	15.681
r_dihedral_angle_4_deg	14.982
r_dihedral_angle_1_deg	5.606
r_scangle_it	1.977
r_scbond_it	1.25
r_angle_refined_deg	1.151
r_mcangle_it	0.953
r_mcbond_it	0.549
r_nbtor_refined	0.309
r_nbd_refined	0.206
r_symmetry_vdw_refined	0.204
r_symmetry_hbond_refined	0.155
r_xyhbond_nbd_refined	0.152
r_chiral_restr	0.073
r_bond_refined_d	0.009
r_gen_planes_refined	0.004
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	8668
Nucleic Acid Atoms
Solvent Atoms	176
Heterogen Atoms	70

Software

Software
Software Name	Purpose
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling
EPMR	phasing