Experiment: 3FX8

Distinct recognition of three-way DNA junctions by a thioester variant of a metallo-supramolecular cylinder ('helicate')

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	8.5	293	1 microliter of 10 mM cylinder, 1 microliter of 3 mM DNA, 2 microliters of crystallization buffer (10 mM Magnesium chloride, 5% v/v Isopropanol, 50 mM Tris-HCl), pH 8.5, VAPOR DIFFUSION, SITTING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
5.5	77.64

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 49.249	α = 90
b = 49.249	β = 90
c = 49.249	γ = 90

Symmetry
Space Group	P 21 3

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	CCD	ADSC QUANTUM 315		2006-02-23	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID29	1.7366, 1.7410, 1.7311	ESRF	ID29

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	2.44	24.63	99.4	0.041	36.1	8.4	1573	1573		-3	94

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)
	2.44	2.58	100		0.447	2.2	5.1	228

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MAD	2.44	24.63	1573	1540	74	98	0.187	0.187	0.187	0.1984	0.212	Random	79.4

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]

RMS Deviations
Key	Refinement Restraint Deviation
s_from_restr_planes	0.031
s_angle_d	0.021
s_non_zero_chiral_vol	0.006
s_bond_d	0.006
s_anti_bump_dis_restr	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms
Nucleic Acid Atoms	120
Solvent Atoms
Heterogen Atoms	62

Software

Software
Software Name	Purpose
ProDC	data collection
SHELXDE	phasing
SHELXL-97	refinement
MOSFLM	data reduction
SCALA	data scaling