2OG3

structure of the rna binding domain of n protein from SARS coronavirus in cubic crystal form

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2OFZ	pdb entry 2ofz

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION	8	277	40% MPD and 0.1 M Tris pH 8.0, typically crystals appear within 2 weeks, VAPOR DIFFUSION, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
3.6	65.84

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 110.001	α = 90
b = 110.001	β = 90
c = 110.001	γ = 90

Symmetry
Space Group	I 21 3

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		mirrors	2005-05-23	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL11-1	0.9797	SSRL	BL11-1

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	1.85	38.9	99.78	0.075	0.068	29.33	4.1	18018	17989			29.19

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)
	1.85	1.89	100		0.47	0.44	1.91	1.9	1330

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	pdb entry 2ofz	1.85	38.9	17989	17989	976	99.78	0.1961	0.20133	0.19904	0.24711	RANDOM	29.19

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]

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.272
r_dihedral_angle_4_deg	22.427
r_dihedral_angle_3_deg	16.017
r_dihedral_angle_1_deg	6.377
r_scangle_it	3.685
r_scbond_it	2.292
r_mcangle_it	1.658
r_angle_refined_deg	1.431
r_mcbond_it	1.012
r_nbtor_refined	0.302
r_symmetry_hbond_refined	0.262
r_nbd_refined	0.207
r_xyhbond_nbd_refined	0.197
r_symmetry_vdw_refined	0.18
r_chiral_restr	0.117
r_metal_ion_refined	0.053
r_symmetry_metal_ion_refined	0.02
r_bond_refined_d	0.015
r_gen_planes_refined	0.006

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	889
Nucleic Acid Atoms
Solvent Atoms	243
Heterogen Atoms

Software

Software
Software Name	Purpose
REFMAC	refinement
Blu-Ice	data collection
HKL-2000	data reduction
HKL-2000	data scaling
PHASER	phasing