2LWN

Solution Structure of Duplex DNA Containing a b-Carba-Fapy-dG Lesion

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D 1H-1H NOESY	1.1 mM 11 mer duplex oligo B-D, 25 mM phosphate buffer, 50 mM NaCl, 0.5 mM EDTA	100% D2O		6.8	ambient	298
2	2D 1H-1H COSY	1.1 mM 11 mer duplex oligo B-D, 25 mM phosphate buffer, 50 mM NaCl, 0.5 mM EDTA	100% D2O		6.8	ambient	298
3	2D DQF-COSY	1.1 mM 11 mer duplex oligo B-D, 25 mM phosphate buffer, 50 mM NaCl, 0.5 mM EDTA	100% D2O		6.8	ambient	298
4	2D 1H-1H TOCSY	1.1 mM 11 mer duplex oligo B-D, 25 mM phosphate buffer, 50 mM NaCl, 0.5 mM EDTA	100% D2O		6.8	ambient	298
5	2D 1H-13C HSQC	1.1 mM 11 mer duplex oligo B-D, 25 mM phosphate buffer, 50 mM NaCl, 0.5 mM EDTA	100% D2O		6.8	ambient	298
6	2D 1H-1H NOESY	1.1 mM 11 mer duplex oligo B-D, 25 mM phosphate buffer, 50 mM NaCl, 0.5 mM EDTA	90% H2O/10% D2O		6.8	ambient	278

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE	800

NMR Refinement
Method	Details	Software
molecular dynamics		TopSpin

NMR Ensemble Information
Conformer Selection Criteria	all calculated structures submitted
Conformers Calculated Total Number	19
Conformers Submitted Total Number	20
Representative Model	1 (minimized average structure)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	TopSpin		Bruker Biospin
2	processing	NMRPipe		Delaglio, Grzesiek, Vuister, Zhu, Pfeifer and Bax
3	chemical shift assignment	Sparky		Goddard
4	data analysis	Sparky		Goddard
5	peak picking	Sparky		Goddard
6	peak volume calc.	Sparky		Goddard
7	geometry optimization	X-PLOR NIH		Schwieters, Kuszewski, Tjandra and Clore
8	refinement	X-PLOR NIH		Schwieters, Kuszewski, Tjandra and Clore
9	structure solution	X-PLOR NIH		Schwieters, Kuszewski, Tjandra and Clore