1A0A

PHOSPHATE SYSTEM POSITIVE REGULATORY PROTEIN PHO4/DNA COMPLEX

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION	3.6		VAPOR DIFFUSION METHOD: DROP-0.4MM PROTEIN, 0.2MM DNA, 1% PEG6K, 20MM NACITRATE (PH3.6), RESERVOIR-1% PEG6K, 20MM NACITRATE(PH3.6), vapor diffusion

Crystal Properties
Matthews coefficient	Solvent content
4.2	71

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 53.51	α = 90
b = 68.3	β = 90
c = 108.77	γ = 90

Symmetry
Space Group	P 21 21 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	288	DIFFRACTOMETER	WEISSENBERG		1996-06-26	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	PHOTON FACTORY BEAMLINE BL-18B		Photon Factory	BL-18B

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	2.8		92	0.087	4.2	3.9		9398		1	26.2

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)
	2.8	2.95	80.4		0.202	3.5	1.9

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-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MIR	THROUGHOUT	2.8	8	3	7581	948	77.3	0.23	0.284	RANDOM	28.4

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]
-0.56			3.9		-3.34

RMS Deviations
Key	Refinement Restraint Deviation
x_dihedral_angle_d	23.9
x_angle_deg	2.42
x_improper_angle_d	1.78
x_bond_d	0.011
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
x_mcbond_it
x_mcangle_it
x_scbond_it
x_scangle_it

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	996
Nucleic Acid Atoms	691
Solvent Atoms	80
Heterogen Atoms

Software

Software
Software Name	Purpose
MLPHARE	phasing
X-PLOR	refinement
WEIS	data reduction
CCP4	data scaling