NMR STRUCTURE OF AN OLIGONUCLEOTIDE CONTAINING AN ABASIC SITE: ALPHA ANOMER
SOLUTION NMR
| NMR Experiment | ||||||||
|---|---|---|---|---|---|---|---|---|
| Experiment | Type | Sample Contents | Solvent | Ionic Strength | pH | Pressure | Temperature (K) | Spectrometer |
| 1 | NOESY | 2.5 mM abasic site containing duplex oligonucleotide; 10 mM sodium phosphate buffer | D2O | 10 mM sodium phosphate buffer | 6.8 | ambient | 293 | |
| 2 | PE-COSY | 2.5 mM abasic site containing duplex oligonucleotide; 10 mM sodium phosphate buffer | D2O | 10 mM sodium phosphate buffer | 6.8 | ambient | 293 | |
| 3 | watergate-NOESY | 2.5 mM abasic site containing duplex oligonucleotide; 10 mM sodium phosphate buffer | 10% D2O, 90% H2O | 10 mM sodium phosphate buffer | 6.8 | ambient | 278 | |
| 4 | 31P-HCOSY | 3 mM abasic site containing duplex oligonucleotide; 10 mM sodium phosphate buffer | D2O | 10 mM sodium phosphate buffer | 6.8 | ambient | 298 | |
| 5 | 31P-decoupled-PE-COSY | 3 mM abasic site containing duplex oligonucleotide; 10 mM sodium phosphate buffer | D2O | 10 mM sodium phosphate buffer | 6.8 | ambient | 298 | |
| 6 | 31P-decoupled-J-scaled-DQCOSY | 3 mM abasic site containing duplex oligonucleotide; 10 mM sodium phosphate buffer | D2O | 10 mM sodium phosphate buffer | 6.8 | ambient | 298 | |
| NMR Spectrometer Information | |||
|---|---|---|---|
| Spectrometer | Manufacturer | Model | Field Strength |
| 1 | Home-built | home-built | 750 |
| 2 | Home-built | home-built | 600 |
| NMR Refinement | ||
|---|---|---|
| Method | Details | Software |
| molecular dynamics | The structure is based on 475 NOE-derived distance constraints and 101 dihedral angle restraints. | X-PLOR |
| NMR Ensemble Information | |
|---|---|
| Conformer Selection Criteria | all calculated structures submitted |
| Conformers Calculated Total Number | 10 |
| Conformers Submitted Total Number | 10 |
| Additional NMR Experimental Information | |
|---|---|
| Details | The abasic site deoxyribose 1H-1H coupling constants and the DNA 31P-H3' coupling constants were experimentally determined. This information was used in the modeling protocol. |
| Computation: NMR Software | ||||
|---|---|---|---|---|
| # | Classification | Version | Software Name | Author |
| 1 | structure solution | X-PLOR | 3.851 | Brunger |
| 2 | processing | Felix | 95.0 | MSI |
| 3 | data analysis | Felix | 95.0 | MSI |
| 4 | refinement | X-PLOR | 3.851 | Brunger |














