7M3R

Crystallographic Structure of the Rhombohedral Crystal Form of STMV Grown from Bromide

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	6	279	Crystals were grown by sitting drop vapor diffusion in Cryschem plates with 0.6 ml reservoirs and 6 to 8 ul drops. The drops were equal amounts of a 5 mg/ml virus stock solution buffered at pH 6.5 with 0.1 M phosphate. The reservoirs were 5% w/v NaBr in 0.1 M phosphate at pH 6.0. Crystallization was at 4 degrees C and the time of development was about 10 days.

Crystal Properties
Matthews coefficient	Solvent content
3.32	62.9

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 166.491	α = 90
b = 166.491	β = 90
c = 435.839	γ = 120

Symmetry
Space Group	H 3

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	173	CCD	MAR CCD 165 mm		2002-06-16	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 8.3.1	1.0	ALS	8.3.1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	R Sym I (Observed)	CC (Half)	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	2.1	55	86	0.16	0.15	0.987	4.5	4.6		200162

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.1	2.2	35		0.32	0.44	2.7

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	FREE R-VALUE	4OQ8	2.1	54.08	233.96	199466	10048	76	0.1805	0.171	0.2082	25.2

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]

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	10.2325
f_angle_d	0.4811
f_chiral_restr	0.0483
f_plane_restr	0.0053
f_bond_d	0.0029

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	22605
Nucleic Acid Atoms
Solvent Atoms	4465
Heterogen Atoms	199

Software

Software
Software Name	Purpose
PHENIX	refinement
d*TREK	data reduction
Aimless	data scaling
PHASER	phasing

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 R01GM133198.