2KZ1
Inter-molecular interactions in a 44 kDa interferon-receptor complex detected by asymmetric back-protonation and 2D NOESY
SOLUTION NMR
NMR Experiment | ||||||||
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Experiment | Type | Sample Contents | Solvent | Ionic Strength | pH | Pressure | Temperature (K) | Spectrometer |
1 | 2D 1H-1H NOESY | 0.25 mM [U-99% 2H] Interferon alpha, 0.25 mM [U-99% 2H] Soluble IFN alpha/beta receptor, 25 mM [U-2H] TRIS, 0.02 % sodium azide | 100% D2O | 25 | 8.0 | ambient | 305 | |
2 | 2D 1H-1H NOESY | 0.25 MM [U-99% 2H, 1H-K,R,L,A,M] INTERFERON ALPHA2, 0.25 MM [U-99% 2H, 1H-H,F,W] SOLUBLE IFN ALPHA/BETA RECEPTOR, 25 mM [U-2H] TRIS, 0.02 % sodium azide | 100% D2O | 25 | 8.0 | ambient | 305 | |
3 | 2D 1H-1H NOESY | 0.25 MM [U-99% 2H, 1H-L] INTERFERON ALPHA2, 0.25 MM [U-99% 2H, 1H-H,W] SOLUBLE IFN ALPHA/BETA RECEPTOR, 25 mM [U-2H] TRIS, 0.02 % sodium azide | 100% D2O | 25 | 8.0 | ambient | 305 | |
4 | 3D 15N NOESY | 0.25 MM [15N] INTERFERON ALPHA2, 0.25 MM [1H] SOLUBLE IFN ALPHA/BETA RECEPTOR, 25 mM [U-2H] TRIS, 0.02 % sodium azide | 95% H2O/5% D2O | 25 | 8.0 | ambient | 305 | |
5 | 3D 15N NOESY | 0.25 MM [1H] INTERFERON ALPHA2, 0.25 MM [15N] SOLUBLE IFN ALPHA/BETA RECEPTOR, 25 mM [U-2H] TRIS, 0.02 % sodium azide | 95% H2O/5% D2O | 25 | 8.0 | ambient | 305 |
NMR Spectrometer Information | |||
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Spectrometer | Manufacturer | Model | Field Strength |
1 | Bruker | DRX | 800 |
NMR Refinement | ||
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Method | Details | Software |
simulated annealing, molecular dynamics | 1000 CONFORMERS WERE OBTAINED IN THE RIGID BODY DOCKING AND 200 BEST CONFORMERS WERE SELECTED FOR SEMI-FLEXIBLE SIMULATED ANNEALING FOLLOWED BY REFINEMENT IN WATER | HADDOCK |
NMR Ensemble Information | |
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Conformer Selection Criteria | structures with the lowest energy |
Conformers Calculated Total Number | 200 |
Conformers Submitted Total Number | 10 |
Representative Model | 1 (closest to the average) |
Computation: NMR Software | ||||
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# | Classification | Version | Software Name | Author |
1 | processing | NMRPipe | 2.3 | Delaglio, Grzesiek, Vuister, Zhu, Pfeifer and Bax |
2 | refinement | HADDOCK | 2.0 | Dominguez et al. |
3 | collection | XwinNMR | 3 | Bruker Biospin |
4 | data analysis | NMRView | 5.2.2 | Johnson, One Moon Scientific |