2N4J

Solution structure of a self complementary Xylonucleic Acid duplex

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D DQF-COSY	1.5 mM XNA	100% D2O		7.2	ambient	283
2	2D 1H-1H TOCSY	1.5 mM XNA	100% D2O		7.2	ambient	283
3	2D 1H-1H NOESY	1.5 mM XNA	100% D2O		7.2	ambient	283
4	2D 1H-13C HSQC aliphatic	1.5 mM XNA	100% D2O		7.2	ambient	283
5	2D 1H-13C HSQC aromatic	1.5 mM XNA	100% D2O		7.2	ambient	283
6	2D 1H-13C HMBC aromatic	1.5 mM XNA	100% D2O		7.2	ambient	283
7	2D 1H-1H NOESY	1.5 mM XNA	90% H2O/10% D2O		7.2	ambient	283
8	2D 1H-31P COSY	1.5 mM XNA	100% D2O		7.2	ambient	283
9	31P Dec. 2D DQF-COSY	1.5 mM XNA	100% D2O		7.2	ambient	283

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE	600
2	Bruker	AVANCE	500

NMR Refinement
Method	Details	Software
torsion angle dynamics, molecular dynamics		TopSpin

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	100
Conformers Submitted Total Number	20
Representative Model	1 (closest to the average)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	TopSpin	2.1	Bruker Biospin
2	processing	TopSpin	2.1	Bruker Biospin
3	refinement	X-PLOR NIH		Schwieters, Kuszewski, Tjandra and Clore
4	chemical shift assignment	CARA		Keller and Wuthrich