3FAN

Crystal structure of chymotrypsin-like protease/proteinase (3CLSP/Nsp4) of porcine reproductive and respiratory syndrome virus (PRRSV)

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5.3	291	0.1M sodium citrate pH 5.3, 0.7M ammonium phosphate monobasic, VAPOR DIFFUSION, HANGING DROP, temperature 291K

Crystal Properties
Matthews coefficient	Solvent content
2.53	51.32

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 112.358	α = 90
b = 49.162	β = 110.25
c = 42.907	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++		2007-03-15	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU MICROMAX-007	1.5418, 0.9793, 0.9000

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	1.9	32.3		0.045	22.1	4.5		17461

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)
	1.9	1.98			0.167	4.3	4.3

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	MAD	THROUGHOUT	1.9	27.91	15507	830	93.56	0.19633	0.19353	0.19	0.24585	0.25	RANDOM	22.137

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]
			0.01		-0.01

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.098
r_dihedral_angle_3_deg	14.88
r_dihedral_angle_4_deg	14.365
r_dihedral_angle_1_deg	6.753
r_scangle_it	3.989
r_scbond_it	2.494
r_mcangle_it	1.769
r_angle_refined_deg	1.572
r_mcbond_it	1.121
r_nbtor_refined	0.307
r_symmetry_vdw_refined	0.228
r_nbd_refined	0.223
r_xyhbond_nbd_refined	0.158
r_symmetry_hbond_refined	0.146
r_chiral_restr	0.107
r_bond_refined_d	0.017
r_gen_planes_refined	0.007
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1393
Nucleic Acid Atoms
Solvent Atoms	208
Heterogen Atoms	5

Software

Software
Software Name	Purpose
CrystalClear	data collection
REFMAC	refinement
HKL-2000	data reduction
HKL-2000	data scaling