2DLJ

2'-Me-Se and Br Derivitation of A-DNA Octamer G(UMS)G(BRU)ACAC

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		6	298	10% v/v MPD 40mM Sodium Cacodylate, 12mM Spermine tetra-HCI, 80 mM sodium Chloride/12mM Potassium Chloride, 20 mM Magnesium Chloride, pH 6.0, VAPOR DIFFUSION, HANGING DROP, temperature 298K, pH 6.00

Crystal Properties
Matthews coefficient	Solvent content
2	38.44

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 42.369	α = 90
b = 42.369	β = 90
c = 23.744	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	CCD	ADSC QUANTUM 315		2005-03-13	M	SINGLE WAVELENGTH
2	1	x-ray		M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X29A	1.1, 0.9196	NSLS	X29A

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
2,1	1.5	18.61	99.7	0.051	7.8	12.3		3777		-3	18

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)
	1.5	1.55	99.2		0.278	3.5	9.1

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (All)	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		1.5	18.61	2	3597	3597	359	95.8	0.174	0.174	0.22	RANDOM	18.87

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]
0.272			0.272		-0.543

RMS Deviations
Key	Refinement Restraint Deviation
c_scangle_it	2.075
c_mcangle_it	1.92
c_angle_deg	1.62
c_scbond_it	1.523
c_mcbond_it	1.192
c_bond_d	0.011
c_bond_d_na
c_bond_d_prot
c_angle_d
c_angle_d_na
c_angle_d_prot
c_angle_deg_na
c_angle_deg_prot
c_dihedral_angle_d
c_dihedral_angle_d_na
c_dihedral_angle_d_prot
c_improper_angle_d
c_improper_angle_d_na
c_improper_angle_d_prot

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms
Nucleic Acid Atoms	162
Solvent Atoms	45
Heterogen Atoms

Software

Software
Software Name	Purpose
CNS	refinement
PDB_EXTRACT	data extraction
CBASS	data collection
HKL-2000	data scaling
SOLVE	phasing