Experiment: 6EK1

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION		292	6.8 mg/ml of PfoI in complex with DNA oligoduplex was mixed with reservoir solution 1:1, microseeding was used. NaHepes 0.1M, magnesium formate 0.2M, 18-20% PEG3350

Crystal Properties
Matthews coefficient	Solvent content
2.19	43.84

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 48.067	α = 90
b = 48.067	β = 90
c = 266.693	γ = 90

Symmetry
Space Group	P 43 21 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	IMAGE PLATE	RIGAKU RAXIS IV++	OSMIC CONFOCAL MIRRORS	2009-05-09	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU RUH3R	1.54

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	R Sym I (Observed)	Rpim I (All)	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	2.6	45.22	98.6	0.112	0.112	0.074	5.7	5.3		17795			49.262

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	2.6	2.74	100		0.44	0.44	3.4	6.2

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	MOLECULAR REPLACEMENT	FREE R-VALUE	2.601	45.219	1.2	17795	1710	96.94	0.2233	0.2181	0.274	Random selection

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
f_dihedral_angle_d	12.425
f_angle_d	0.574
f_chiral_restr	0.022
f_bond_d	0.002
f_plane_restr	0.002

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2395
Nucleic Acid Atoms
Solvent Atoms	6
Heterogen Atoms	4

Software

Software
Software Name	Purpose
PHENIX	refinement
MOSFLM	data reduction
SCALA	data scaling
MOLREP	phasing

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.