2KNM
Solution structure of the cyclotide cycloviolacin O2
SOLUTION NMR
NMR Experiment | ||||||||
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Experiment | Type | Sample Contents | Solvent | Ionic Strength | pH | Pressure | Temperature (K) | Spectrometer |
1 | 2D 1H-1H TOCSY | 1-2 mM cycloviolacin O2 | 90% H2O/10% D2O | 6.1 | ambient | 303 | ||
2 | 2D DQF-COSY | 1-2 mM cycloviolacin O2 | 90% H2O/10% D2O | 6.1 | ambient | 303 | ||
3 | 2D 1H-1H NOESY | 1-2 mM cycloviolacin O2 | 90% H2O/10% D2O | 6.1 | ambient | 303 | ||
4 | 2D 1H-1H TOCSY | 1-2 mM cycloviolacin O2 | 100% D2O | 6.1 | ambient | 303 | ||
5 | 2D 1H-1H NOESY | 1-2 mM cycloviolacin O2 | 100% D2O | 6.1 | ambient | 303 | ||
6 | 2D 1H-1H TOCSY | 1-2 mM cycloviolacin O2 | 90% H2O/10% D2O | 6.1 | ambient | 303 | ||
7 | 2D 1H-1H NOESY | 1-2 mM cycloviolacin O2 | 90% H2O/10% D2O | 6.1 | ambient | 303 |
NMR Spectrometer Information | |||
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Spectrometer | Manufacturer | Model | Field Strength |
1 | Varian | INOVA | 500 |
2 | Varian | AVANCE | 500 |
NMR Refinement | ||
---|---|---|
Method | Details | Software |
simulated annealing | Structures were calculated using torsion angle dynamics within CNS and subsequently refined and energy minimised using cartesian dynamics in explicit water. | VNMR |
NMR Ensemble Information | |
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Conformer Selection Criteria | structures with the lowest energy |
Conformers Calculated Total Number | 50 |
Conformers Submitted Total Number | 20 |
Representative Model | 1 (lowest energy) |
Computation: NMR Software | ||||
---|---|---|---|---|
# | Classification | Version | Software Name | Author |
1 | collection | VNMR | 6.1 | Varian |
2 | processing | VNMR | 6.1 | Varian |
3 | data analysis | CARA | Keller and Wuthrich | |
4 | chemical shift assignment | CARA | Keller and Wuthrich | |
5 | structure solution | CYANA | 2.0 | Guntert, Mumenthaler and Wuthrich |
6 | refinement | CNS | 1.2 | Brunger, Adams, Clore, Gros, Nilges and Read |