2M54

Refined NMR solution structure of metal-modified DNA

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	0.3-0.5 mM ds DNA, 0.9-1.5 mM SILVER ION, 120 mM sodium perchlorate	100% D2O	0.12	7.2	ambient	298
2	2D 1H-1H TOCSY	0.3-0.5 mM ds DNA, 0.9-1.5 mM SILVER ION, 120 mM sodium perchlorate	100% D2O	0.12	7.2	ambient	298
3	2D 1H-13C HSQC	0.3-0.5 mM ds DNA, 0.9-1.5 mM SILVER ION, 120 mM sodium perchlorate	100% D2O	0.12	7.2	ambient	298
4	2D 1H-15N HSQC	0.3-0.5 mM ds DNA, 0.9-1.5 mM SILVER ION, 120 mM sodium perchlorate	100% D2O	0.12	7.2	ambient	298
5	1D 31P	0.3-0.5 mM ds DNA, 0.9-1.5 mM SILVER ION, 120 mM sodium perchlorate	100% D2O	0.12	7.2	ambient	298
6	2D 1H-1H NOESY	0.3-0.5 mM ds DNA, 0.9-1.5 mM SILVER ION, 120 mM sodium perchlorate	90% H2O/10% D2O	0.12	7.2	ambient	278

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE	700
2	Bruker	AVANCE	400

NMR Refinement
Method	Details	Software
torsion angle dynamics		TopSpin

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	200
Conformers Submitted Total Number	20
Representative Model	1 (lowest energy)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	processing	TopSpin	1.3, 2.0, 2.1	Bruker Biospin
2	chemical shift assignment	Sparky	3.1	Goddard
3	structure solution	DYANA	1.5	Guntert, Braun and Wuthrich
4	structure solution	X-PLOR NIH	2.15	Schwieters, Kuszewski, Tjandra and Clore
5	refinement	X-PLOR NIH	2.15	Schwieters, Kuszewski, Tjandra and Clore