3D0H

Crystal structure of spike protein receptor-binding domain from the 2002-2003 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
2.93	57.99

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 80.352	α = 90
b = 119.841	β = 95.89
c = 109.42	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	3.1	37.5					38826

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	3.1	37.5	33878	1726	90.31	0.225	0.221	0.302	RANDOM	75.25

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]
1.29		4.35	0.99		-1.38

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	42.386
r_dihedral_angle_4_deg	20.556
r_dihedral_angle_3_deg	18.757
r_dihedral_angle_1_deg	4.844
r_sphericity_free	4.538
r_scangle_it	2.173
r_mcangle_it	2.113
r_scbond_it	1.444
r_angle_refined_deg	1.293
r_rigid_bond_restr	1.258
r_mcbond_it	1.187
r_sphericity_bonded	0.686
r_symmetry_hbond_refined	0.358
r_nbtor_refined	0.322
r_symmetry_vdw_refined	0.27
r_nbd_refined	0.259
r_xyhbond_nbd_refined	0.15
r_chiral_restr	0.084
r_bond_refined_d	0.011
r_gen_planes_refined	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	12522
Nucleic Acid Atoms
Solvent Atoms	27
Heterogen Atoms	94

Software

Software
Software Name	Purpose
REFMAC	refinement
PDB_EXTRACT	data extraction