1JLZ
Solution Structure of a K+-Channel Blocker from the Scorpion Toxin of Tityus cambridgei
SOLUTION NMR
NMR Experiment | ||||||||
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Experiment | Type | Sample Contents | Solvent | Ionic Strength | pH | Pressure | Temperature (K) | Spectrometer |
1 | 2D NOESY | 2mM Tc1; 50mM phosphate buffer; 90% H2O, 10% D2O | 90% H2O/10% D2O | 3.0 | ambient | 275 | ||
2 | DQF-COSY | 2mM Tc1; 50mM phosphate buffer; 90% H2O, 10% D2O | 90% H2O/10% D2O | 3.0 | ambient | 275 | ||
3 | 2D TOCSY | 2mM Tc1; 50mM phosphate buffer; 90% H2O, 10% D2O | 90% H2O/10% D2O | 3.0 | ambient | 275 |
NMR Spectrometer Information | |||
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Spectrometer | Manufacturer | Model | Field Strength |
1 | Bruker | AMX | 500 |
2 | Bruker | AVANCE | 600 |
NMR Refinement | ||
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Method | Details | Software |
simulated annealing | The structures are based on a total of 200 restraints, 163 are NOE-derived distance constraints, 21 dihedral angle restraints,16 distance restraints from hydrogen bonds. | XwinNMR |
NMR Ensemble Information | |
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Conformer Selection Criteria | structures with the lowest energy |
Conformers Calculated Total Number | 100 |
Conformers Submitted Total Number | 15 |
Representative Model | 6 (lowest energy) |
Additional NMR Experimental Information | |
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Details | This structure was determined using standard 2D homonuclear techniques. |
Computation: NMR Software | ||||
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# | Classification | Version | Software Name | Author |
1 | processing | XwinNMR | 2.5 | |
2 | data analysis | AURELIA | 2.1 | |
3 | refinement | X-PLOR | 98 | Brunger |