1QZ8

Crystal structure of SARS coronavirus NSP9

X-RAY DIFFRACTION

---

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	4.2	293	Ammonium Sulphate, Na Citrate, pH 4.2, VAPOR DIFFUSION, SITTING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
3.1	60

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 89.115	α = 90
b = 89.115	β = 90
c = 136.675	γ = 120

Symmetry
Space Group	P 61 2 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 4		2003-07-18	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-4	0.9793	ESRF	ID14-4

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	2.7	14.9	99.1	0.056	9.4	10.8	9345	9345

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	2.7	2.84	99.1		0.433	1.6	10.2

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	SAD	THROUGHOUT	2.7	15	9345	8724	443	98.91	0.24955	0.24951	0.24792	0.28035	RANDOM	36.181

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]
-2.23	-1.11		-2.23		3.34

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	9.19
r_scangle_it	3.451
r_scbond_it	2.143
r_angle_refined_deg	1.88
r_mcangle_it	1.663
r_angle_other_deg	1.01
r_mcbond_it	0.868
r_symmetry_vdw_other	0.366
r_symmetry_vdw_refined	0.277
r_nbd_other	0.243
r_xyhbond_nbd_refined	0.225
r_nbd_refined	0.202
r_symmetry_hbond_refined	0.196
r_chiral_restr	0.112
r_nbtor_other	0.099
r_bond_refined_d	0.018
r_gen_planes_refined	0.005
r_bond_other_d	0.002
r_gen_planes_other	0.002

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1699
Nucleic Acid Atoms
Solvent Atoms	31
Heterogen Atoms	20

Software

Software
Software Name	Purpose
REFMAC	refinement
MOSFLM	data reduction
CCP4	data scaling
SOLVE	phasing
RESOLVE	phasing