2GHV

Crystal structure of SARS spike protein receptor binding domain

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	4.6	290	4% PEG4000, 0.1M sodium acetate, pH 4.6, VAPOR DIFFUSION, HANGING DROP, temperature 290K

Crystal Properties
Matthews coefficient	Solvent content
3.71	66.82

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 75.884	α = 90
b = 75.884	β = 90
c = 235.863	γ = 90

Symmetry
Space Group	P 43 21 2

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	ADSC QUANTUM 315		2005-09-09	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X29A	1.099999	NSLS	X29A

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	2.2	50	99.5	0.098			36084	36036		-4

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.2	2.28	99.9		0.739	2

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	MOLECULAR REPLACEMENT	THROUGHOUT	2.2	50	35893	1790	99.54	0.18389	0.18237	0.21312	RANDOM	49.959

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]
1.37			1.37		-2.75

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	31.208
r_dihedral_angle_4_deg	17.84
r_dihedral_angle_3_deg	15.008
r_dihedral_angle_1_deg	7.364
r_scangle_it	4.608
r_scbond_it	3.652
r_mcangle_it	2.965
r_mcbond_it	2.327
r_angle_refined_deg	1.489
r_angle_other_deg	0.849
r_mcbond_other	0.703
r_symmetry_hbond_refined	0.315
r_symmetry_vdw_other	0.247
r_nbd_refined	0.205
r_nbtor_refined	0.19
r_nbd_other	0.186
r_symmetry_vdw_refined	0.171
r_xyhbond_nbd_refined	0.148
r_chiral_restr	0.091
r_nbtor_other	0.088
r_bond_refined_d	0.013
r_gen_planes_refined	0.005
r_bond_other_d	0.001
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2944
Nucleic Acid Atoms
Solvent Atoms	152
Heterogen Atoms

Software

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