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NMR assignment and structure of a peptide derived from the fusion peptide 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 COSY 0.6 mM wtFP-tag, 25 % [U-98% 2H] HFIP, 2.0 mM HEPES, 67.5 % H2O, 7.5 % [U-99% 2H] D2O, 0.1 mM DSS hexafluoroisopropanol/water 2 mM 6.8 1 atm 298 Bruker AVANCE 600 2 2D 1H-1H TOCSY 0.6 mM wtFP-tag, 25 % [U-98% 2H] HFIP, 2.0 mM HEPES, 67.5 % H2O, 7.5 % [U-99% 2H] D2O, 0.1 mM DSS hexafluoroisopropanol/water 2 mM 6.8 1 atm 298 Bruker AVANCE 600 3 2D 1H-1H NOESY 0.6 mM wtFP-tag, 25 % [U-98% 2H] HFIP, 2.0 mM HEPES, 67.5 % H2O, 7.5 % [U-99% 2H] D2O, 0.1 mM DSS hexafluoroisopropanol/water 2 mM 6.8 1 atm 298 Bruker AVANCE 600 4 2D 1H-13C HSQC aliphatic 0.6 mM wtFP-tag, 25 % [U-98% 2H] HFIP, 2.0 mM HEPES, 67.5 % H2O, 7.5 % [U-99% 2H] D2O, 0.1 mM DSS hexafluoroisopropanol/water 2 mM 6.8 1 atm 298 Bruker AVANCE 600 5 2D 1H-15N HSQC 0.6 mM wtFP-tag, 25 % [U-98% 2H] HFIP, 2.0 mM HEPES, 67.5 % H2O, 7.5 % [U-99% 2H] D2O, 0.1 mM DSS hexafluoroisopropanol/water 2 mM 6.8 1 atm 298 Bruker AVANCE 600
NMR Spectrometer Information Spectrometer Manufacturer Model Field Strength 1 Bruker AVANCE 600
NMR Refinement Method Details Software simulated annealing CYANA
NMR Ensemble Information Conformer Selection Criteria structures with the least restraint violations Conformers Calculated Total Number 100 Conformers Submitted Total Number 20 Representative Model 1 (fewest violations)
Computation: NMR Software # Classification Version Software Name Author 1 structure calculation CYANA Guntert, Mumenthaler and Wuthrich 2 collection TopSpin Bruker Biospin 3 processing TopSpin Bruker Biospin 4 peak picking Sparky Goddard 5 chemical shift assignment Sparky Goddard 6 refinement CYANA Guntert, Mumenthaler and Wuthrich