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NMR assignment and structure of a peptide derived from the membrane proximal external region of HIV-1 gp41 in the presence of hexafluoroisopropanol
NMR Experiment Experiment Type Sample Contents Solvent Ionic Strength pH Pressure Temperature (K) Spectrometer 1 2D 1H-1H TOCSY 0.5 mM 10E8p, 25 % v/v [U-2H] HFIP, 2 mM HEPES, 0.1 mM DSS 90% H2O/10% D2O 2 7 ambient 308 2 2D 1H-1H NOESY 0.5 mM 10E8p, 25 % v/v [U-2H] HFIP, 2 mM HEPES, 0.1 mM DSS 90% H2O/10% D2O 2 7 ambient 308 3 2D 1H-1H TOCSY 0.5 mM 10E8p, 25 % v/v [U-2H] HFIP, 2 mM HEPES, 0.1 mM DSS 100% D2O 2 7 ambient 298 4 2D 1H-1H NOESY 0.5 mM 10E8p, 25 % v/v [U-2H] HFIP, 2 mM HEPES, 0.1 mM DSS 100% D2O 2 7 ambient 298 5 2D 1H-13C HSQC aliphatic 0.5 mM 10E8p, 25 % v/v [U-2H] HFIP, 2 mM HEPES, 0.1 mM DSS 100% D2O 2 7 ambient 308
NMR Spectrometer Information Spectrometer Manufacturer Model Field Strength 1 Bruker AVANCE 600 2 Bruker AVANCE 800
NMR Refinement Method Details Software simulated annealing TopSpin
NMR Ensemble Information Conformer Selection Criteria target function Conformers Calculated Total Number 200 Conformers Submitted Total Number 20 Representative Model 1 (fewest violations)
Computation: NMR Software # Classification Version Software Name Author 1 collection TopSpin Bruker Biospin 2 processing TopSpin Bruker Biospin 3 chemical shift assignment Sparky Goddard 4 dihedral angle restraints TALOS Cornilescu, Delaglio and Bax 5 structure solution CYANA Guntert, Mumenthaler and Wuthrich 6 refinement CYANA