High-resolution solution structure of outer membrane protein A transmembrane domain
SOLUTION NMR
| NMR Experiment | ||||||||
|---|---|---|---|---|---|---|---|---|
| Experiment | Type | Sample Contents | Solvent | Ionic Strength | pH | Pressure | Temperature (K) | Spectrometer |
| 1 | HNCO based experiment for measurement 1JHN couplings | 1mM OmpA U-2H,13C,15N; 500mM DPC; 10mM phosphate buffer; pH 6.3; 50mM NaCl | 90% H2O/10% D2O | 50mM NaCl | 6.3 | ambient | 223 | |
| 2 | HNCO based experiment for measurement 1JNC' couplings | 1mM OmpA U-2H,13C,15N; 500mM DPC; 10mM phosphate buffer; pH 6.3; 50mM NaCl | 90% H2O/10% D2O | 50mM NaCl | 6.3 | ambient | 223 | |
| 3 | HNCO based experiment for measurement 1JC'Ca couplings | 1mM OmpA U-2H,13C,15N; 500mM DPC; 10mM phosphate buffer; pH 6.3; 50mM NaCl | 90% H2O/10% D2O | 50mM NaCl | 6.3 | ambient | 223 | |
| NMR Spectrometer Information | |||
|---|---|---|---|
| Spectrometer | Manufacturer | Model | Field Strength |
| 1 | Varian | INOVA | 600 |
| NMR Refinement | ||
|---|---|---|
| Method | Details | Software |
| simulated annealing | refinement using RDCs | CNS |
| NMR Ensemble Information | |
|---|---|
| Conformer Selection Criteria | structures with the lowest energy |
| Conformers Calculated Total Number | 150 |
| Conformers Submitted Total Number | 10 |
| Representative Model | 1 (lowest energy) |
| Additional NMR Experimental Information | |
|---|---|
| Details | distance restraints, hydrogen bonds and dihedral angles were the same as for previous NMR structure (PDB code 1g90) |
| Computation: NMR Software | ||||
|---|---|---|---|---|
| # | Classification | Version | Software Name | Author |
| 1 | refinement | CNS | 1.1 | Brunger |
