1LAI

Solution Structure of the B-DNA Duplex CGCGGTGTCCGCG.

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D NOESY	1.8 mM DNA strand, 10 mM sodium phosphate, 100 mM NaCl, 50 uM EDTA	D2O	100 mM NaCl	6.8	ambient	303
2	DQF-COSY	1.8 mM DNA strand, 10 mM sodium phosphate, 100 mM NaCl, 50 uM EDTA	D2O	100 mM NaCl	6.8	ambient	303
3	31P-1H COSY	1.8 mM DNA strand, 10 mM sodium phosphate, 100 mM NaCl, 50 uM EDTA	D2O	100 mM NaCl	6.8	ambient	303
4	2D NOESY	1.8 mM DNA strand, 1 mM sodium phosphate, 100 mM NaCl, 50 uM EDTA	H2O/D2O	100 mM NaCl	6.8	ambient	278

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	DRX	500

NMR Refinement
Method	Details	Software
Molecular dynamics using a simulated annealing protocol.		UXNMR

NMR Ensemble Information
Conformer Selection Criteria
Conformers Calculated Total Number
Conformers Submitted Total Number	1
Representative Model	1 (minimized average structure)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	UXNMR	3.0	Bruker
2	data analysis	Felix	97.0, 2000	Hare, D.
3	iterative matrix relaxation	MARDIGRAS	3.2	Borgias & James
4	refinement	X-PLOR	3.8	Brunger, A.