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The V27A mutant of influenza A M2 proton channel
NMR Experiment Experiment Type Sample Contents Solvent Ionic Strength pH Pressure Temperature (K) Spectrometer 1 2D 1H-15N TROSY 0.70 mM [U-100% 13C; U-100% 15N; U-80% 2H] Influenza M2 V27A mutant-2 95% H2O/5% D2O ~0.1 7.5 ambient 30 2 3D TROSY HNCO 0.70 mM [U-100% 13C; U-100% 15N; U-80% 2H] Influenza M2 V27A mutant-2 95% H2O/5% D2O ~0.1 7.5 ambient 30 3 3D TROSY HNCA 0.70 mM [U-100% 13C; U-100% 15N; U-80% 2H] Influenza M2 V27A mutant-2 95% H2O/5% D2O ~0.1 7.5 ambient 30 4 3D TROSY HN(CO)CA 0.70 mM [U-100% 13C; U-100% 15N; U-80% 2H] Influenza M2 V27A mutant-2 95% H2O/5% D2O ~0.1 7.5 ambient 30 5 3D TROSY HNCACB 0.70 mM [U-100% 13C; U-100% 15N; U-80% 2H] Influenza M2 V27A mutant-2 95% H2O/5% D2O ~0.1 7.5 ambient 30 6 3D 1H-15N NOESY TROSY 0.75 mM [U-99% 13C; U-99% 15N] Influenza M2 V27A mutant-1 95% H2O/5% D2O ~0.1 7.5 ambient 30 7 3D 1H-13C NOESY TROSY 0.75 mM [U-99% 13C; U-99% 15N] Influenza M2 V27A mutant-1 95% H2O/5% D2O ~0.1 7.5 ambient 30 8 2D 1H-13C HSQC 0.75 mM [U-99% 13C; U-99% 15N] Influenza M2 V27A mutant-1 95% H2O/5% D2O ~0.1 7.5 ambient 30
NMR Spectrometer Information Spectrometer Manufacturer Model Field Strength 1 Bruker AVANCE 600
NMR Refinement Method Details Software simulated annealing, molecular dynamics Standard simulated annealing protocol with cooling from 1000K to 20K, 6.7 ps of Verlet dynamics at each temperature step, using a time step of 3 fs X-PLOR NIH
NMR Ensemble Information Conformer Selection Criteria structures with the lowest energy Conformers Calculated Total Number 75 Conformers Submitted Total Number 15 Representative Model 1 (lowest energy)
Computation: NMR Software # Classification Version Software Name Author 1 structure solution X-PLOR NIH 2.24 Schwieters, Kuszewski, Tjandra and Clore 2 refinement X-PLOR NIH 2.24 Schwieters, Kuszewski, Tjandra and Clore