Solution Structure of Berberine Bound to a dGMP Fill-in G-Quadruplex in the PDGFR-b Promoter
SOLUTION NMR
| NMR Experiment | ||||||||
|---|---|---|---|---|---|---|---|---|
| Experiment | Type | Sample Contents | Solvent | Ionic Strength | pH | Pressure | Temperature (K) | Spectrometer |
| 1 | 2D 1H-1H NOESY | 1.5 mM BER-dGMP-Pu19m2 | 90% H2O/10% D2O | 50 mM | 7.0 | 760 mmHg | 298 | Bruker AV-800 800 |
| 2 | 2D 1H-1H NOESY | 1.5 mM BER-dGMP-Pu19m2 | 90% H2O/10% D2O | 50 mM | 7.0 | 760 mmHg | 288 | Bruker AV-800 800 |
| 3 | 2D 1H-1H NOESY | 1.5 mM BER-dGMP-Pu19m2 | 90% H2O/10% D2O | 50 mM | 7.0 | 760 mmHg | 308 | Bruker AV-800 800 |
| 4 | 2D 1H-13C HSQC | 1.5 mM BER-dGMP-Pu19m2 | 90% H2O/10% D2O | 50 mM | 7.0 | 760 mmHg | 298 | Bruker AV-800 800 |
| 5 | 2D 1H-1H TOCSY | 1.5 mM BER-dGMP-Pu19m2 | 90% H2O/10% D2O | 50 mM | 7.0 | 760 mmHg | 298 | Bruker AV-800 800 |
| 6 | 1D GEJRSE HMQC | 9 mM [U-100% 13C; U-100% 15N] dGMP | 90% H2O/10% D2O | 50 mM | 7.0 | 760 mmHg | 298 | Bruker AV-800 800 |
| NMR Spectrometer Information | |||
|---|---|---|---|
| Spectrometer | Manufacturer | Model | Field Strength |
| 1 | Bruker | AV-500 | 500 |
| 2 | Bruker | AV-800 | 800 |
| NMR Refinement | ||
|---|---|---|
| Method | Details | Software |
| molecular dynamics | Amber | |
| NMR Ensemble Information | |
|---|---|
| Conformer Selection Criteria | structures with the lowest energy |
| Conformers Calculated Total Number | 100 |
| Conformers Submitted Total Number | 10 |
| Representative Model | 1 (lowest energy) |
| Computation: NMR Software | ||||
|---|---|---|---|---|
| # | Classification | Version | Software Name | Author |
| 1 | collection | TopSpin | Bruker Biospin | |
| 2 | chemical shift assignment | NMRFAM-SPARKY | Lee W, Tonelli M, Markley JL. | |
| 3 | structure calculation | X-PLOR NIH | Schwieters, Kuszewski, Tjandra and Clore | |
| 4 | refinement | Amber | Case, Darden, Cheatham III, Simmerling, Wang, Duke, Luo, and Kollman | |














