1IF1

INTERFERON REGULATORY FACTOR 1 (IRF-1) COMPLEX WITH DNA

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		6.5		PROTEIN WAS CRYSTALLIZED FROM 18-22% PEG8K, 300 MM AMMONIUM ACETATE (PH 6.5), 10% GLYCEROL.

Crystal Properties
Matthews coefficient	Solvent content
3.1	60

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 84.8	α = 90
b = 84.8	β = 90
c = 203.7	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	111	CCD	CUSTOM-MADE	DUAL SLITS	1996-06-21	M

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	CHESS BEAMLINE F2		CHESS	F2

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	3	20	99.1	0.061	0.061	15.3	4.5		20328		2

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	3	3.23	99.7		0.09	0.09	13.5	3.5

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	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	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MAD	THROUGHOUT	3	12	2	20328			0.242	0.242	0.309	RANDOM	29.97

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]
1.31	0.642		0.642

RMS Deviations
Key	Refinement Restraint Deviation
x_angle_deg	2.3
x_bond_d	0.02
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
x_dihedral_angle_d_na
x_dihedral_angle_d_prot
x_improper_angle_d
x_improper_angle_d_na
x_improper_angle_d_prot
x_mcbond_it
x_mcangle_it
x_scbond_it
x_scangle_it

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1715
Nucleic Acid Atoms	1054
Solvent Atoms	10
Heterogen Atoms

Software

Software
Software Name	Purpose
PHASES	phasing
X-PLOR	refinement
DENZO	data reduction
SCALEPACK	data scaling