2OP9

Substrate Specificity Profiling and Identification of a New Class of Inhibitor for the Major Protease of the SARS Coronavirus

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.5	298	10% PEG-6K, 10% DMSO, 2mM DTT, 0.1M MES, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.5	50.85

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 52.314	α = 90
b = 96.798	β = 103.2
c = 67.877	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	100	CCD	ADSC QUANTUM 4		2004-06-13	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 8.3.1		ALS	8.3.1

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	1.8	65.938				60901	60036

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 (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	1.8	20	59985	2998	98.58	0.172	0.17	0.2197	0.207	0.2513	RANDOM	36.393

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]
1.4		1.07	0.63		-1.54

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.019
r_dihedral_angle_3_deg	15.225
r_dihedral_angle_4_deg	13.54
r_dihedral_angle_1_deg	12.196
r_scangle_it	4.028
r_angle_other_deg	3.328
r_scbond_it	2.717
r_mcangle_it	1.798
r_angle_refined_deg	1.544
r_mcbond_it	1.193
r_symmetry_vdw_other	0.359
r_symmetry_vdw_refined	0.294
r_nbd_other	0.234
r_nbd_refined	0.233
r_mcbond_other	0.226
r_symmetry_hbond_refined	0.221
r_xyhbond_nbd_refined	0.193
r_nbtor_refined	0.183
r_chiral_restr	0.102
r_nbtor_other	0.1
r_bond_refined_d	0.015
r_gen_planes_other	0.007
r_gen_planes_refined	0.006
r_bond_other_d

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4649
Nucleic Acid Atoms
Solvent Atoms	491
Heterogen Atoms	58

Software

Software
Software Name	Purpose
SCALA	data scaling
REFMAC	refinement
PDB_EXTRACT	data extraction
CrystalClear	data collection
MOSFLM	data reduction
MOLREP	phasing