3BSO

Norwalk Virus polymerase bound to cytidine 5'-triphosphate and primer-template RNA

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7	298	16% (w/v) PEG 8000, 25% (w/v) glycerol, 100 mM Tris-HCl, 50 mM KCl, 4 mM MgCl2, 10 mM MnCl2, 14 mM 2-mercaptoethanol, 0.1% (w/v) CHAPS, 0.5 mM RNA duplex, 1 mM CTP, 0.03 mM polymerase, pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.72	54.8

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 75.1	α = 90
b = 93.473	β = 90
c = 96.538	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	ADSC QUANTUM 315	M1: plane parabola Pt and Rh-coated Invar steel. M2: torroid (2:1 demagnification) Pt and Rh-coated Si	2007-12-01	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 8.3.1	1.11587	ALS	8.3.1

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	1.74	60	98.1	0.045	0.045	29.2	3.8	69074	69074	-3	-3	34.8

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	1.74	1.8	90.5		0.436	0.436	2	3.2	6276

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	MOLECULAR REPLACEMENT	THROUGHOUT	1.74	60	69027	69027	3486	98.15	0.20218	0.20218	0.20059	0.23171	RANDOM	37.989

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]
2.79			-1.86		-0.93

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	33.952
r_dihedral_angle_4_deg	18.626
r_dihedral_angle_3_deg	13.622
r_scangle_it	5.718
r_dihedral_angle_1_deg	5.024
r_scbond_it	3.971
r_mcangle_it	3.095
r_mcbond_it	2.291
r_angle_refined_deg	1.06
r_nbtor_refined	0.296
r_nbd_refined	0.191
r_symmetry_vdw_refined	0.166
r_xyhbond_nbd_refined	0.095
r_chiral_restr	0.068
r_symmetry_hbond_refined	0.067
r_bond_refined_d	0.007
r_gen_planes_refined	0.003

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3762
Nucleic Acid Atoms	344
Solvent Atoms	395
Heterogen Atoms	56

Software

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