1QBY

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	1.6 MM OLIGODEOXYNUCLEOTIDE; 10 MM PHOSPHATE BUFFER; 0.05 MM EDTA; 0.1 M NACL		0.1 M NACL	7.0	1 atm	278
2	DQF-COSY	1.6 MM OLIGODEOXYNUCLEOTIDE; 10 MM PHOSPHATE BUFFER; 0.05 MM EDTA; 0.1 M NACL		0.1 M NACL	7.0	1 atm	298
3	TOCSY	1.6 MM OLIGODEOXYNUCLEOTIDE; 10 MM PHOSPHATE BUFFER; 0.05 MM EDTA; 0.1 M NACL		0.1 M NACL	7.0	1 atm	298
4	2D NOESY	1.6 MM OLIGODEOXYNUCLEOTIDE; 10 MM PHOSPHATE BUFFER; 0.05 MM EDTA; 0.1 M NACL		0.1 M NACL	7.0	1 atm	288

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

NMR Refinement
Method	Details	Software
NOE-RESTRAINED MOLECULAR DYNAMICS/SIMULATED ANNEALING	THE STRUCTURE IS BASED ON A TOTAL OF 509 NOE-DERIVED DISTANCE CONSTRAINTS, 95 EMPIRICAL SUGAR PUCKER RESTRAINTS, 36 EMPIRICAL BACKBONE ANGLE DIHEDRAL RESTRAINTS, AND 16 EMPIRICAL PLANARITY RESTRAINTS.	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
Representative Model	12 (closest to the average)

Additional NMR Experimental Information
Details	STRUCTURE WAS DETERMINED USING STANDARD 2D HOMONUCLEAR TECHNIQUES

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	XwinNMR	2.0	BRUCKER
2	structure solution	X-PLOR	3.1	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.