2NPV
Structure and dynamics of surfactin studied by NMR in micellar media
SOLUTION NMR
NMR Experiment | ||||||||
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Experiment | Type | Sample Contents | Solvent | Ionic Strength | pH | Pressure | Temperature (K) | Spectrometer |
1 | DQF-COSY | 4mM surfactin in 90% H2O, 10% D2O (pH 5.1); 50mM SDS-d25 | 90% H2O/10% D2O | 5.1 | ambient | 298 | ||
2 | 2D TOCSY | 4mM surfactin in 90% H2O, 10% D2O (pH 5.1); 50mM SDS-d25 | 90% H2O/10% D2O | 5.1 | ambient | 298 | ||
3 | 2D NOESY | 4mM surfactin in 90% H2O, 10% D2O (pH 5.1); 50mM SDS-d25 | 90% H2O/10% D2O | 5.1 | ambient | 298 |
NMR Spectrometer Information | |||
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Spectrometer | Manufacturer | Model | Field Strength |
1 | Bruker | DRX | 500 |
NMR Refinement | ||
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Method | Details | Software |
distance geometry, simulated annealing | the structures are based on a total of 49 restraints, 47 are NOE-derived distance constraints and 2 are dihedral angle restraints | X-PLOR |
NMR Ensemble Information | |
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Conformer Selection Criteria | structures with the least restraint violations, structures with the lowest energy |
Conformers Calculated Total Number | 50 |
Conformers Submitted Total Number | 24 |
Representative Model | 1 (closest to the average) |
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 | X-PLOR | 3.851 | |
2 | refinement | CHARMM | 22 | |
3 | data analysis | Gifa | 4.0 | Marc-Andre Delsuc |
4 | data analysis | MOLMOL |