1SH2

Crystal Structure of Norwalk Virus Polymerase (Metal-free, Centered Orthorhombic)

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.5	295	PEG 8000, ammonium sulfate, Tris-Cl, glycerol, CHAPS, 2-mercaptoethanol, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 295K

Crystal Properties
Matthews coefficient	Solvent content
2.66	53.8

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 114.27	α = 90
b = 115.24	β = 90
c = 91.9	γ = 90

Symmetry
Space Group	C 2 2 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	110	IMAGE PLATE	MARRESEARCH	Mirrors	2003-10-01	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU RU300	1.5418

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	2.3	40	98.8	0.075	0.075	19.8	8	27003	27003		-3	40

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	2.3	2.37	91.3		0.402	0.402	2.3	3.5	2054

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 (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 1KHV	2.3	36.04	25374	25374	1596	100	0.23054	0.22672	0.29087	RANDOM	23.817

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]
-0.15			-5.55		5.7

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	5.509
r_scangle_it	3.238
r_scbond_it	2.39
r_mcangle_it	1.844
r_angle_refined_deg	1.07
r_mcbond_it	0.991
r_nbd_refined	0.194
r_symmetry_hbond_refined	0.192
r_symmetry_vdw_refined	0.138
r_xyhbond_nbd_refined	0.134

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	5.509
r_scangle_it	3.238
r_scbond_it	2.39
r_mcangle_it	1.844
r_angle_refined_deg	1.07
r_mcbond_it	0.991
r_nbd_refined	0.194
r_symmetry_hbond_refined	0.192
r_symmetry_vdw_refined	0.138
r_xyhbond_nbd_refined	0.134
r_chiral_restr	0.077
r_bond_refined_d	0.008
r_gen_planes_refined	0.003

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3939
Nucleic Acid Atoms
Solvent Atoms	139
Heterogen Atoms

Software

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

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.