2LTH
NMR structure of major ampullate spidroin 1 N-terminal domain at pH 5.5
SOLUTION NMR
NMR Experiment | ||||||||
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Experiment | Type | Sample Contents | Solvent | Ionic Strength | pH | Pressure | Temperature (K) | Spectrometer |
1 | 2D 1H-15N HSQC | 1.5 mM [U-99% 13C; U-99% 15N] Major ampullate spidroin 1, 5 % [U-100% 2H] D2O, 0.03 % sodium azide, 20 mM sodium acetate, 20 mM sodium chloride | 95% H2O/5% D2O | 0.04 | 5.5 | ambient | 298 | |
2 | 3D HNCA | 1.5 mM [U-99% 13C; U-99% 15N] Major ampullate spidroin 1, 5 % [U-100% 2H] D2O, 0.03 % sodium azide, 20 mM sodium acetate, 20 mM sodium chloride | 95% H2O/5% D2O | 0.04 | 5.5 | ambient | 298 | |
3 | 3D 1H-13C NOESY aliphatic | 1.5 mM [U-99% 13C; U-99% 15N] Major ampullate spidroin 1, 5 % [U-100% 2H] D2O, 0.03 % sodium azide, 20 mM sodium acetate, 20 mM sodium chloride | 95% H2O/5% D2O | 0.04 | 5.5 | ambient | 298 | |
4 | 3D 1H-13C NOESY aromatic | 1.5 mM [U-99% 13C; U-99% 15N] Major ampullate spidroin 1, 5 % [U-100% 2H] D2O, 0.03 % sodium azide, 20 mM sodium acetate, 20 mM sodium chloride | 95% H2O/5% D2O | 0.04 | 5.5 | ambient | 298 | |
5 | 3D 1H-15N NOESY | 1.5 mM [U-99% 13C; U-99% 15N] Major ampullate spidroin 1, 5 % [U-100% 2H] D2O, 0.03 % sodium azide, 20 mM sodium acetate, 20 mM sodium chloride | 95% H2O/5% D2O | 0.04 | 5.5 | ambient | 298 |
NMR Spectrometer Information | |||
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Spectrometer | Manufacturer | Model | Field Strength |
1 | Varian | INOVA | 600 |
NMR Refinement | ||
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Method | Details | Software |
torsion angle dynamics, simulated annealing | CYANA |
NMR Ensemble Information | |
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Conformer Selection Criteria | target function |
Conformers Calculated Total Number | 100 |
Conformers Submitted Total Number | 20 |
Representative Model | 1 (closest to the average) |
Computation: NMR Software | ||||
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# | Classification | Version | Software Name | Author |
1 | structure solution | CYANA | 2.1 | Guntert, Mumenthaler and Wuthrich |
2 | refinement | CNS | 1.2 | Brunger, Adams, Clore, Gros, Nilges and Read |
3 | collection | VnmrJ | 2.1b | Varian |
4 | chemical shift assignment | CARA | 1.9.0 | Keller and Wuthrich |
5 | processing | TopSpin | Bruker Biospin | |
6 | data analysis | UNIO | 2.0.2 | T. Herrmann, F. Fiorito, J. Volk |
7 | peak picking | UNIO | 2.0.2 | T. Herrmann, F. Fiorito, J. Volk |
8 | refinement | CYANA | 2.1 | Guntert, Mumenthaler and Wuthrich |