3FQQ

Crystal structure of a novel dimeric form of HCV NS5A domain I protein

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.5	277	22% PEG-3350, 0.1 M HEPES pH 7.5, and 10% (v/v) isopropanol; 2,6-dimethyl-4-heptyl-beta-D-maltopyranoside (Hampton detergent screen 2, No. 3), VAPOR DIFFUSION, HANGING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.39	48.45

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 57.106	α = 90
b = 57.106	β = 90
c = 197.365	γ = 120

Symmetry
Space Group	P 31 2 1

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	ALS BEAMLINE 5.0.2	1.0	ALS	5.0.2

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	2.2	50	99.2	0.108	0.108	17.7	6.2	19703	19703			34.7

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	2.2	2.25	92		0.535	0.535	2	4	1163

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	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	MOLECULAR REPLACEMENT	THROUGHOUT	Monomer from 1ZH1	2.2	50	19213	19213	406	99.12	0.2223	0.2223	0.22162	0.25534	RANDOM	29.786

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]
0.4	0.2		0.4		-0.6

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	39.391
r_dihedral_angle_4_deg	18.611
r_dihedral_angle_3_deg	16.953
r_dihedral_angle_1_deg	5.65
r_scangle_it	2.461
r_scbond_it	1.54
r_angle_refined_deg	1.237
r_mcangle_it	1.158
r_mcbond_it	0.664
r_nbtor_refined	0.303
r_symmetry_vdw_refined	0.209
r_nbd_refined	0.196
r_xyhbond_nbd_refined	0.156
r_symmetry_hbond_refined	0.123
r_chiral_restr	0.082
r_bond_refined_d	0.009
r_gen_planes_refined	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2466
Nucleic Acid Atoms
Solvent Atoms	203
Heterogen Atoms	30

Software

Software
Software Name	Purpose
REFMAC	refinement
CNS	refinement
ADSC	data collection
HKL-2000	data reduction
HKL-2000	data scaling
CNS	phasing