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Solution NMR structure of the cactus-derived antimicrobial peptide Ep-AMP1
NMR Experiment Experiment Type Sample Contents Solvent Ionic Strength pH Pressure Temperature (K) Spectrometer 1 2D 1H-1H TOCSY 6 mg/mL Ep-AMP1 90% H2O/10% D2O 0 3.0 ambient 298 2 2D 1H-1H NOESY 6 mg/mL Ep-AMP1 90% H2O/10% D2O 0 3.0 ambient 298 3 2D DQF-COSY 6 mg/mL Ep-AMP1 90% H2O/10% D2O 0 3.0 ambient 298 4 2D 1H-1H TOCSY 4 mg/mL Ep-AMP1 100% D2O 0 3.0 ambient 298 5 2D 1H-1H NOESY 4 mg/mL Ep-AMP1 100% D2O 0 3.0 ambient 298 6 2D 1H-13C HSQC 4 mg/mL Ep-AMP1 100% D2O 0 3.0 ambient 298 7 2D 1H-1H ECOSY 4 mg/mL Ep-AMP1 100% D2O 0 3.0 ambient 298
NMR Spectrometer Information Spectrometer Manufacturer Model Field Strength 1 Bruker AVANCE 600
NMR Refinement Method Details Software simulated annealing Simulated annealing followed by refinement and energy minimization in explicit solvent. TopSpin
NMR Ensemble Information Conformer Selection Criteria structures with the lowest energy Conformers Calculated Total Number 50 Conformers Submitted Total Number 20 Representative Model 1 (lowest energy)
Computation: NMR Software # Classification Version Software Name Author 1 collection TopSpin 2.1 Bruker Biospin 2 processing TopSpin 2.1 Bruker Biospin 3 data analysis XEASY Bartels et al. 4 peak picking XEASY Bartels et al. 5 chemical shift assignment XEASY Bartels et al. 6 structure solution CYANA 3.0 Guntert, Mumenthaler and Wuthrich 7 structure solution CNS 1.2 Brunger, Adams, Clore, Gros, Nilges and Read 8 refinement CNS 1.2 Brunger, Adams, Clore, Gros, Nilges and Read