3SNE

Crystal structure of SARS coronavirus main protease complexed with Ac-ESTLQ-H (Soaking)

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	6	298	8% PEG 6000, 0.1 M MES, 3% MPD, 3% DMSO, pH 6.0, VAPOR DIFFUSION, SITTING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
3.33	63.01

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 108.91	α = 90
b = 81.36	β = 104.35
c = 53.4	γ = 90

Symmetry
Space Group	C 1 2 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	200	CCD	MAR CCD 165 mm		2008-12-05	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	EMBL/DESY, HAMBURG BEAMLINE X13	0.8123	EMBL/DESY, Hamburg	X13

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	2.6	32.21	99		3.8	13975	13975		-3

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	2.667	97.3

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	MOLECULAR REPLACEMENT	THROUGHOUT	2.6	32.21	13975	13975	695	99.85	0.19082	0.19082	0.18815	0.24083	RANDOM	38.602

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]
-0.06		0.09	0.01		0.1

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.382
r_dihedral_angle_4_deg	23.512
r_dihedral_angle_3_deg	17.947
r_dihedral_angle_1_deg	7.288
r_scangle_it	3.78
r_scbond_it	2.426
r_angle_refined_deg	1.906
r_mcangle_it	1.629
r_mcbond_it	0.879
r_chiral_restr	0.157

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.382
r_dihedral_angle_4_deg	23.512
r_dihedral_angle_3_deg	17.947
r_dihedral_angle_1_deg	7.288
r_scangle_it	3.78
r_scbond_it	2.426
r_angle_refined_deg	1.906
r_mcangle_it	1.629
r_mcbond_it	0.879
r_chiral_restr	0.157
r_bond_refined_d	0.017
r_gen_planes_refined	0.008

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2413
Nucleic Acid Atoms
Solvent Atoms	79
Heterogen Atoms	12

Software

Software
Software Name	Purpose
MAR345dtb	data collection
AMoRE	phasing
REFMAC	refinement
MOSFLM	data reduction
SCALA	data scaling

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.