1A34

SATELLITE TOBACCO MOSAIC VIRUS/RNA COMPLEX

X-RAY DIFFRACTION

---

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
in silico model	Other		MODIFIED STNV

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	liquid diffusion in microgravity	6.5		PROTEIN WAS FOUR TIMES RECRYSTALLIZED FROM BULK SOLUTION BY ADDITION AF AMMONIUM SULFATE TO 15% SATURATION. SPACE CRYSTALS WERE GROWN BY LIQUID-LIQUID DIFFUSION IN A MICROGRAVITY ENVIRONMENT OVER 12 DAYS ABOARD IML-I MISSION OF THE US SPACE SHUTTLE., pH 6.50, liquid diffusion in microgravity

Crystal Properties
Matthews coefficient	Solvent content
2.42	25

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 174.27	α = 90
b = 191.77	β = 90
c = 202.5	γ = 90

Symmetry
Space Group	I 2 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	290	AREA DETECTOR	SDMS	NONE	1992-02-19	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU RU200

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (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	1.81	30	89	0.091	0.091		8.2		271689		2	8.7

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.81	1.94	63.9		0.199		2.1

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-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MIR, MOLECULAR REPLACEMENT	THROUGHOUT	MODIFIED STNV	1.81	30	4	215809	3277	71.8	0.179	0.184	RANDOM	14.6

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
x_dihedral_angle_d	17.77
x_scangle_it	4.47
x_mcangle_it	3.34
x_scbond_it	2.78
x_mcbond_it	1.85
x_angle_deg	1.8
x_improper_angle_d	1.39
x_bond_d	0.009
x_bond_d_na
x_bond_d_prot
x_angle_d
x_angle_d_na
x_angle_d_prot
x_angle_deg_na
x_angle_deg_prot
x_dihedral_angle_d_na
x_dihedral_angle_d_prot
x_improper_angle_d_na
x_improper_angle_d_prot

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1137
Nucleic Acid Atoms	422
Solvent Atoms	168
Heterogen Atoms	18

Software

Software
Software Name	Purpose
X-PLOR	refinement
BRICOGNE'S	model building
INTERPOLATE	model building
TNT	refinement
HEAVY	model building
SDMS	data reduction
SDMS	data scaling
HEAVY	phasing
BRICOGNE'S	phasing
INTERPOLATE	phasing
TNT	phasing