1PE4
SOLUTION STRUCTURE OF TOXIN CN12 FROM CENTRUROIDES NOXIUS ALFA SCORPION TOXIN ACTING ON SODIUM CHANNELS. NMR STRUCTURE
SOLUTION NMR
NMR Experiment | ||||||||
---|---|---|---|---|---|---|---|---|
Experiment | Type | Sample Contents | Solvent | Ionic Strength | pH | Pressure | Temperature (K) | Spectrometer |
1 | DQF COSY, 2D TOCSY, AND 2D NOSEY | 0.6 mM in H2O/D2O 90:10%; | 90% H2O and 10% D2O | none | 3.1 | ambient | 300 | |
2 | DQF-COSY, 2D TOCSY, AND 2D NOESY | 0.6 mM in 100% D2O | 100% D2O | none | 3.1 | ambient | 300 |
NMR Spectrometer Information | |||
---|---|---|---|
Spectrometer | Manufacturer | Model | Field Strength |
1 | Varian | UNITYPLUS | 500 |
NMR Refinement | ||
---|---|---|
Method | Details | Software |
simulated annealing | SEE JOURNAL REFERENCE | CNS |
NMR Ensemble Information | |
---|---|
Conformer Selection Criteria | NO RESTRAINT VIOLATIONS LESS THAN 0.2 ANGSTROMS AND MIMINUM ENERGY LESS THAN 115.0 KCAL/MOL BEST REPRESENTATIVE CONFORMER IN THIS ENSEMBLE: 1 |
Conformers Calculated Total Number | 250 |
Conformers Submitted Total Number | 19 |
Representative Model | 1 (minimized average structure) |
Additional NMR Experimental Information | |
---|---|
Details | THE STRUCTURE WAS DETERMINED USING HOMONUCLEAR 1H-1H 2D NMR ON THE NATURAL TOXIN EXTRACTED FROM THE SCORPION VENOM |
Computation: NMR Software | ||||
---|---|---|---|---|
# | Classification | Version | Software Name | Author |
1 | refinement | CNS | 1.1 | BRUNGER |
2 | processing | NMRPipe | 1 | DELAGLIO |
3 | collection | VNMR | 6.1c | VARIAN |