SOLUTION STRUCTURE OF A TOXIN FROM THE SCORPION TITYUS SERRULATUS (TSTX-K ALPHA) DETERMINED BY NMR.
SOLUTION NMR
| NMR Experiment | ||||||||
|---|---|---|---|---|---|---|---|---|
| Experiment | Type | Sample Contents | Solvent | Ionic Strength | pH | Pressure | Temperature (K) | Spectrometer |
| 1 | 2D NOESY | 4.53 mM TsTx-Ka 2.2 mM d11-Tris 0.1 mM EDTA 0.35 mM NaN3 | 90% H2O/10% D2O | 1.44 | 3.50 | 1 atm | 310 | |
| 2 | DQF-COSY | 4.53 mM TsTx-Ka 2.2 mM d11-Tris 0.1 mM EDTA 0.35 mM NaN3 | 90% H2O/10% D2O | 1.44 | 3.50 | 1 atm | 310 | |
| 3 | TOCSY | 4.53 mM TsTx-Ka 2.2 mM d11-Tris 0.1 mM EDTA 0.35 mM NaN3 | 90% H2O/10% D2O | 1.44 | 3.50 | 1 atm | 310 | |
| 4 | ROESY | 4.53 mM TsTx-Ka 2.2 mM d11-Tris 0.1 mM EDTA 0.35 mM NaN3 | 90% H2O/10% D2O | 1.44 | 3.50 | 1 atm | 310 | |
| 5 | E-COSY | 4.53 mM TsTx-Ka 2.2 mM d11-Tris 0.1 mM EDTA 0.35 mM NaN3 | 100% D2O | 1.44 | 3.50 | 1 atm | 310 | |
| 6 | TOCSY | 4.53 mM TsTx-Ka 2.2 mM d11-Tris 0.1 mM EDTA 0.35 mM NaN3 | 90% H2O/10% D2O | 1.44 | 3.50 | 1 atm | 305 | |
| 7 | TOCSY | 4.53 mM TsTx-Ka 2.2 mM d11-Tris 0.1 mM EDTA 0.35 mM NaN3 | 90% H2O/10% D2O | 1.44 | 3.50 | 1 atm | 300 | |
| 8 | TOCSY | 4.53 mM TsTx-Ka 2.2 mM d11-Tris 0.1 mM EDTA 0.35 mM NaN3 | 90% H2O/10% D2O | 1.44 | 3.50 | 1 atm | 295 | |
| 9 | TOCSY | 4.53 mM TsTx-Ka 2.2 mM d11-Tris 0.1 mM EDTA 0.35 mM NaN3 | 90% H2O/10% D2O | 1.44 | 3.50 | 1 atm | 290 | |
| 10 | 2D NOESY | 4.53 mM TsTx-Ka 2.2 mM d11-Tris 0.1 mM EDTA 0.35 mM NaN3 | 90% H2O/10% D2O | 1.44 | 3.50 | 1 atm | 290 | |
| NMR Spectrometer Information | |||
|---|---|---|---|
| Spectrometer | Manufacturer | Model | Field Strength |
| 1 | Bruker | DMX | 600 |
| NMR Refinement | ||
|---|---|---|
| Method | Details | Software |
| distance geometry simulated annealing | These structures are based on a total of 569 NOE distance contraints, 13 dihedral angle restraints, and 16 phi angle restraints. | X-PLOR |
| NMR Ensemble Information | |
|---|---|
| Conformer Selection Criteria | structures with acceptable covalent geometry,structures with the least restraint violations,structures with the lowest energy |
| Conformers Calculated Total Number | 100 |
| Conformers Submitted Total Number | 30 |
| Representative Model | 25 (closest to the average) |
| Additional NMR Experimental Information | |
|---|---|
| Details | This structure was determined using standard 2D homonuclear techniques. |
| Computation: NMR Software | ||||
|---|---|---|---|---|
| # | Classification | Version | Software Name | Author |
| 1 | refinement | X-PLOR | 3.851 | Brunger |
| 2 | structure solution | X-PLOR | 3.851 | Brunger |
| 3 | collection | XwinNMR | ||
| 4 | processing | NMRPipe | 1.7 | Delagilio |
| 5 | processing | Felix | ||
