3D0I

Crystal structure of spike protein receptor-binding domain from the 2005-2006 SARS coronavirus civet strain complexed with human-civet chimeric receptor ACE2

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION	8.5	298	100 mM Tris, 22% PEG6000, 100 mM NaCl, pH 8.5, vapor diffusion, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.94	58.2

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 80.424	α = 90
b = 119.824	β = 95.5
c = 109.772	γ = 90

Symmetry
Space Group	P 1 21 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray							SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 19-BM	0.97924	APS	19-BM

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	2.9	50					46550

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	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		THROUGHOUT	2.9	36.47	41328	2052	89.92	0.227	0.224	0.278	RANDOM	84.359

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]
1.9		4.71	1.06		-2.05

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	41.69
r_dihedral_angle_4_deg	18.69
r_dihedral_angle_3_deg	17.918
r_sphericity_free	4.237
r_dihedral_angle_1_deg	3.826
r_scangle_it	2.379
r_mcangle_it	2.277
r_scbond_it	1.704
r_rigid_bond_restr	1.454
r_mcbond_it	1.288
r_angle_refined_deg	1.243
r_sphericity_bonded	0.656
r_nbtor_refined	0.324
r_symmetry_vdw_refined	0.296
r_nbd_refined	0.263
r_symmetry_hbond_refined	0.253
r_xyhbond_nbd_refined	0.156
r_chiral_restr	0.082
r_bond_refined_d	0.01
r_gen_planes_refined	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	12518
Nucleic Acid Atoms
Solvent Atoms	27
Heterogen Atoms	94

Software

Software
Software Name	Purpose
REFMAC	refinement
PDB_EXTRACT	data extraction