1I7V

THE SOLUTION STRUCTURE OF A BAY REGION 1R-BENZ[A]ANTHRACENE OXIDE ADDUCT AT THE N6 POSITION OF ADENINE OF AN OLIGODEOXYNUCLEOTIDE CONTAINING THE HUMAN N-RAS CODON 61 SEQUENCE

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 oligodeoxynucleotide, 10 mM phosphate buffer, 0.05 mM EDTA, 0.1 M NaCl	90% H2O/10% D2O	0.1 M NaCl	7.0	1 atm	278
2	2D NOESY	1.8 mM oligodeoxynucleotide, 10 mM phosphate buffer, 0.05 mM EDTA, 0.1 M NaCl	100% D2O	0.1 M NaCl	7.0	1 atm	288
3	DQF-COSY	1.8 mM oligodeoxynucleotide, 10 mM phosphate buffer, 0.05 mM EDTA, 0.1 M NaCl	100% D2O	0.1 M NaCl	7.0	1 atm	288
4	TOCSY	1.8 mM oligodeoxynucleotide, 10 mM phosphate buffer, 0.05 mM EDTA, 0.1 M NaCl	100% D2O	0.1 M NaCl	7.0	1 atm	288

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	DMX	500
2	Bruker	DMX	750

NMR Refinement
Method	Details	Software
NOE-restrained molecular dynamics/simulated annealing	The structure was based on a total of 485 NOE derived distance constraints.	XwinNMR

NMR Ensemble Information
Conformer Selection Criteria	back calculated data agree with experimental NOESY spectrum
Conformers Calculated Total Number	1
Conformers Submitted Total Number	1

Additional NMR Experimental Information
Details	This structure was determined using 2D homonuclear techniques

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	XwinNMR	2.0	Bruker
2	structure solution	X-PLOR	3.851	A. Brunger
3	processing	Felix	97.0	Biosym Technologies
4	refinement	CORMA	5.2	Borgias, B.A., Thomas, P.D., Li, H., Kumar, A., and Tonelli, M.
5	iterative matrix relaxation	MARDIGRAS	3.0	Borgias, B.A., Thomas, P.D., Li, H., Kumar, A., and Tonelli, M.