2MIV

NMR studies of N2-guanine adducts derived from the tumorigen dibenzo[a,l]pyrene in DNA: Impact of adduct stereochemistry, size, and local DNA structure on solution conformations

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	1.5 mM DB[a,l]P covalently bound to 11mer DNA duplex, 100 mM NaCl, 10 mM Na2HPO4, 25 mM DSS	100% D2O		6.8
2	2D 1H-1H TOCSY	1.5 mM DB[a,l]P covalently bound to 11mer DNA duplex, 100 mM NaCl, 10 mM Na2HPO4, 25 mM DSS	100% D2O		6.8
3	2D 1H-1H NOESY	1.5 mM DB[a,l]P covalently bound to 11mer DNA duplex, 100 mM NaCl, 10 mM Na2HPO4, 25 mM DSS	90% H2O/10% D2O		6.8
4	2D 1H-1H COSY	1.5 mM DB[a,l]P covalently bound to 11mer DNA duplex, 100 mM NaCl, 10 mM Na2HPO4, 25 mM DSS	100% D2O		6.8

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

NMR Refinement
Method	Details	Software
molecular dynamics		Sparky

NMR Ensemble Information
Conformer Selection Criteria	representative structures
Conformers Calculated Total Number	1000
Conformers Submitted Total Number	5
Representative Model	1 (closest to the average)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	data analysis	Sparky		Goddard
2	chemical shift assignment	Sparky		Goddard
3	collection	TopSpin		Bruker Biospin
4	refinement	Amber		Case, Darden, Cheatham, III, Simmerling, Wang, Duke, Luo, ... and Kollman