2HSS

13mer duplex DNA containg an abasic site with beta anomer, averaged structure

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D NOESY	2.7 mM duplex DNA containing an abasic site with beta anomer, 10 mM sodium phosphate, 0.2 mM EDTA	100% D2O	10 mM sodium phosphate mM	6.5	1 atm	298
2	2D TOCSY	2.7 mM duplex DNA containing an abasic site with beta anomer, 10 mM sodium phosphate, 0.2 mM EDTA	100% D2O	10 mM sodium phosphate mM	6.5	1 atm	298
3	E-COSY	2.7 mM duplex DNA containing an abasic site with beta anomer, 10 mM sodium phosphate, 0.2 mM EDTA	100% D2O	10 mM sodium phosphate mM	6.5	1 atm	298
4	HP-selective HSQC	2.7 mM duplex DNA containing an abasic site with beta anomer, 10 mM sodium phosphate, 0.2 mM EDTA	100% D2O	10 mM sodium phosphate mM	6.5	1 atm	298
5	2D NOESY	2.7 mM duplex DNA containing an abasic site with beta anomer, 10 mM sodium phosphate, 0.2 mM EDTA	90% H2O/10%D2O (v/v)	10 mM sodium phosphate mM	6.5	1 atm	277

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Home-built	Custom-built	750
2	Home-built	Custom-built	591

NMR Refinement
Method	Details	Software
simulated annealing molecular dynamics	he structures are based on 482 NOE-derived distance constraints, 57 dihedral angle restraints,8 distance restraints from hydrogen bonds	Felix

NMR Ensemble Information
Conformer Selection Criteria	structures with the least restraint violations
Conformers Calculated Total Number	30
Conformers Submitted Total Number	1
Representative Model	1 (minimized average structure)

Additional NMR Experimental Information
Details	This structure was determined using standard 2D homonuclear techniques and HP-selective HSQC techniques

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	data analysis	Felix	2000
2	geometry optimization	MARDIGRAS
3	refinement	Amber	8.0	Case, et al.