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NMR STRUCTURE OF THE 2-AMINO-1-METHYL-6-PHENYLIMIDAZO[4,5-B]PYRIDINE (PHIP) C8-DEOXYGUANOSINE ADDUCT IN DUPLEX DNA
NMR Experiment Experiment Type Sample Contents Solvent Ionic Strength pH Pressure Temperature (K) Spectrometer 1 2D NOESY 9.1 mg of [PhIP]dG.dC 11mer duplex in 600 ul of 10 mM Na2PO4 buffer 100% D2O 0.1 M NaCl 7.00 ambient 298 2 2D NOESY 9.1 mg of [PhIP]dG.dC 11mer duplex in 600 ul of 10 mM Na2PO4 buffer 100% D2O 0.1 M NaCl 7.00 ambient 293 3 2D NOESY 9.1 mg of [PhIP]dG.dC 11mer duplex in 600 ul of 10 mM Na2PO4 buffer 90% H2O/10% D2O 0.1 M NaCl 7.00 ambient 274
NMR Spectrometer Information Spectrometer Manufacturer Model Field Strength 1 Varian INOVA 600
NMR Refinement Method Details Software restrainted torsion angle minimizations A total of 266 NOE-derived distance constraints were used in the calculations VNMR
NMR Ensemble Information Conformer Selection Criteria structures with the lowest energy Conformers Calculated Total Number 48 Conformers Submitted Total Number 6 Representative Model 1 (lowest energy)
Additional NMR Experimental Information Details This structure was determined using standard 2D homonuclear techniques
Computation: NMR Software # Classification Version Software Name Author 1 collection VNMR 6.0 Varian 2 data analysis Felix 97 MSI 3 structure solution DUPLEX none Hingerty and Broyde 4 refinement DUPLEX none Hingerty and Broyde