Experiment: 2Z9G

Complex structure of SARS-CoV 3C-like protease with PMA

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1Z1I

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	6.5	298	15% PEG 6000, 4-14% Dimethyl sulfoxide, 0.1mM Dithiothreitol, 0.1M MES, pH 6.5, VAPOR DIFFUSION, SITTING DROP, temperature 298.0K

Crystal Properties
Matthews coefficient	Solvent content
3.38	63.61

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 108.28	α = 90
b = 81.93	β = 104.99
c = 53.45	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	100	IMAGE PLATE	RIGAKU RAXIS IV++		2005-12-30	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU	1.5418

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge 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	1.86	30	97.6	0.039	43.4	3.5	37913	37042		1

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	1.86	1.93	81.2		0.228	5.4	2.5	3074

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	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 (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	1Z1I	1.86	30	37913	36140	1809		0.195	0.195	0.193	0.1935	0.232	0.2332	RANDOM	33.8

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]

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2371
Nucleic Acid Atoms
Solvent Atoms	565
Heterogen Atoms	1

Software

Software
Software Name	Purpose
CrystalClear	data collection
AMoRE	phasing
CNS	refinement
HKL-2000	data reduction
HKL-2000	data scaling