1AU7

PIT-1 MUTANT/DNA COMPLEX

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	4		A 28 BP DNA DUPLEX (10MG/ML) WAS ADDED TO THE PROTEIN IN A 1:2 MOLAR RATIO. CRYSTALS WERE GROWN BY VAPOR DIFFUSION USING HANGING DROPS OF 1 UL. OF PROTEIN/DNA SOLUTION MIXED 1 UL. OF RESERVOIR SOLUTION. THE BEST CRYSTALS WERE OBTAINED WITH RESERVOIRS CONTAINING 400-600 MM PHOSPHORIC ACID ADJUSTED TO PH 4.0 - 4.3 WITH TRIETHYLAMINE., pH 4.00, vapor diffusion - hanging drop

Crystal Properties
Matthews coefficient	Solvent content
2.14	33

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 42.5	α = 76.7
b = 50.1	β = 79.3
c = 55.8	γ = 67.2

Symmetry
Space Group	P 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	111	IMAGE PLATE	FUJI	DUAL SLITS	1994-08-19	M	SINGLE WAVELENGTH

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	2.7	25	87.2	0.058	5.8	18	2.5		10021		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)
	2.7	2.8	73		0.189	18.9	7	2.2

Refinement

Statistics
Diffraction ID	Structure Solution 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	MAD	NONE	2.3	6	2	14575		84.7	0.23	0.302	RANDOM

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_angle_deg	1.71
x_bond_d	0.013
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	2653
Nucleic Acid Atoms	1094
Solvent Atoms	528
Heterogen Atoms

Software

Software
Software Name	Purpose
PHASIT	model building
X-PLOR	refinement
DENZO	data reduction
SCALEPACK	data scaling
PHASIT	phasing