Nuclear magnetic resonance 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
| 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 | ||||
| NMR Spectrometer Information | |||
|---|---|---|---|
| Spectrometer | Manufacturer | Model | Field Strength |
| 1 | Bruker | AVANCE | 500 |
| NMR Refinement | ||
|---|---|---|
| Method | Details | Software |
| molecular dynamics | TopSpin | |
| NMR Ensemble Information | |
|---|---|
| Conformer Selection Criteria | structures with the least restraint violations |
| Conformers Calculated Total Number | 1000 |
| Conformers Submitted Total Number | 1 |
| Representative Model | 1 (fewest violations) |
| Computation: NMR Software | ||||
|---|---|---|---|---|
| # | Classification | Version | Software Name | Author |
| 1 | collection | TopSpin | Bruker Biospin | |
| 2 | processing | TopSpin | Bruker Biospin | |
| 3 | data analysis | Sparky | Goddard | |
| 4 | chemical shift assignment | Sparky | Goddard | |
| 5 | refinement | Amber | Case, Darden, Cheatham, III, Simmerling, Wang, Duke, Luo, ... and Kollman | |














