1L9V

Non Structural protein encoded by gene segment 8 of rotavirus (NSP2), an NTPase, ssRNA binding and nucleic acid helix-destabilizing protein

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.25	298	15% Peg 6000, 0.2 M Magnesium acetate, 0.1M Tris-HCl. Protein buffer 0.2M MgCl2, 0.5 mM EDTA , 0.5 mM DTT, 2mM Tris-HCl pH7.2. 0.2 M MgCl2 was necessary to make protein monodisperse. Protein:precipitant ratio 1:1. Plate like crystals (0.08 mm X 0.2 mm X 0.2 mm)Crystals grew in two to three weeks, pH 7.25, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
3.07	59.9

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 108.432	α = 90
b = 108.432	β = 90
c = 152.877	γ = 90

Symmetry
Space Group	I 4 2 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	93	CCD	ADSC QUANTUM 4	Mirrors	2001-02-24	M	MAD
2	1

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X8C	0.9795	NSLS	X8C

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	2.6	40	92.5	0.068	10.1	5.2	14403	75176			46.5

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.6	2.69	94.2

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	MAD	THROUGHOUT	2.6	38.34	14403	13324	1347	92.5	0.241	0.241	0.241	0.287	RANDOM	54.5

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]
-1.91			-1.91		3.81

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	21.9
c_scangle_it	15
c_mcangle_it	14.77
c_scbond_it	10.39
c_mcbond_it	9.53
c_angle_deg	1.3
c_improper_angle_d	0.78
c_bond_d	0.007
c_bond_d_na
c_bond_d_prot
c_angle_d
c_angle_d_na
c_angle_d_prot
c_angle_deg_na
c_angle_deg_prot
c_dihedral_angle_d_na
c_dihedral_angle_d_prot
c_improper_angle_d_na
c_improper_angle_d_prot

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2545
Nucleic Acid Atoms
Solvent Atoms	1
Heterogen Atoms

Software

Software
Software Name	Purpose
CNS	refinement
DENZO	data reduction
SCALEPACK	data scaling
CNS	phasing