2XWY

Structure of MK-3281, a Potent Non-Nucleoside Finger-Loop Inhibitor, in complex with the Hepatitis C Virus NS5B Polymerase

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		6	277	SOAKING WITH COMPOUND MK3281 WAS PERFORMED AT 4 DEG C BY TRANSFERRING THE APO-NS5B CRYSTALS FOR 10 MIN IN A SOLUTION CONTAINING 100 MM 2-MORPHOLINOETHANESULFONIC ACID (MES), PH 6.0, 14% POLYETHYLENE GLYCOL (PEG) 8,000, 14% 2- PROPANOL, 2.5 MM TCEP, 10 MM MNCL2 AND 2.5 MM OF COMPOUND MK3281. THE CRYSTALS WERE THEN TRANSFERRED FOR 1 MIN TO A CRYO-PROTECTANT SOLUTION CONTAINING 100 MM MES PH 6.0, 14% POLYETHYLENE GLYCOL PEG 8,000, 14% 2-PROPANOL, 18% 2-METHYL-2,5 PENTANEDIOL (MPD), 2.5 MM TCEP, 5 MM MNCL2 AND 1.25 MM COMPOUND MK3281 AND THEN PLUNGED DIRECTLY INTO LIQUID NITROGEN.

Crystal Properties
Matthews coefficient	Solvent content
2.6	53

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 66.983	α = 90
b = 94.272	β = 90
c = 95.145	γ = 90

Symmetry
Space Group	P 21 21 2

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 210			M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-1		ESRF	ID14-1

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	2.53	20	99.7	0.09	5.9	3.9		20692		1

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	2.53	2.67	99.7		0.53	1.5	3.8

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 (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 1CSJ	2.53	95.35	19605	1056	99.63	0.23727	0.23332	0.31016	RANDOM	54.851

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]
1.15			-5.32		4.17

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	33.962
r_dihedral_angle_3_deg	18.535
r_dihedral_angle_4_deg	17.26
r_dihedral_angle_1_deg	5.734
r_scangle_it	2.504
r_scbond_it	1.543
r_angle_refined_deg	1.349
r_mcangle_it	0.916
r_mcbond_it	0.468
r_chiral_restr	0.085
r_bond_refined_d	0.012
r_gen_planes_refined	0.006
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_refined
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_refined
r_symmetry_vdw_other
r_symmetry_hbond_refined
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_mcangle_other
r_scbond_other
r_scangle_other
r_long_range_B_refined
r_long_range_B_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3911
Nucleic Acid Atoms
Solvent Atoms	130
Heterogen Atoms	37

Software

Software
Software Name	Purpose
REFMAC	refinement
MOSFLM	data reduction
SCALA	data scaling
AMoRE	phasing