1A1I

RADR (ZIF268 VARIANT) ZINC FINGER-DNA COMPLEX (GCAC SITE)

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.2		22.5% PEG 3350, 500MM NACL, 25 MM MES PH 6.2, VAPOR DIFFUSION, HANGING DROP

Crystal Properties
Matthews coefficient	Solvent content
2.32	47.07

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 43.2	α = 90
b = 56.3	β = 90
c = 133.8	γ = 90

Symmetry
Space Group	C 2 2 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	130	IMAGE PLATE	RIGAKU RAXIS IIC	YALE MIRRORS	1995-07-15	M

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 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	1.6	20	96.4	0.049	27.8	2.1		21212		-2

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)
	1.6	1.66	89.9		0.109	9.2	1.7

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	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	ISOMORPHOUS MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 1AAY, WITHOUT WATERS AND WITHOUT SIDE CHAINS FOR RESIDUES 18 - 24	1.6	20	21186	2418	96.4	0.191	0.191	0.216	RANDOM	14.8

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]
-2.53			2		2.372

RMS Deviations
Key	Refinement Restraint Deviation
x_dihedral_angle_d	18.8
x_scangle_it	2.167
x_scbond_it	1.468
x_improper_angle_d	1.45
x_mcangle_it	1.294
x_angle_deg	1.06
x_mcbond_it	0.826
x_bond_d	0.004
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	712
Nucleic Acid Atoms	445
Solvent Atoms	255
Heterogen Atoms	3

Software

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