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Solution structure of the scorpion toxin omega-Buthitoxin-Hf1a
NMR Experiment Experiment Type Sample Contents Solvent Ionic Strength pH Pressure Temperature (K) Spectrometer 1 2D 1H-1H TOCSY 2 mg/mL Buthitoxin-Hf1a 90% H2O/10% D2O 0 mM 3.5 ambient 298 Bruker AVANCE III HD 700 2 2D 1H-1H NOESY 2 mg/mL Buthitoxin-Hf1a 90% H2O/10% D2O 0 mM 3.5 ambient 298 Bruker AVANCE III HD 700 3 2D 1H-13C HSQC 2 mg/mL Buthitoxin-Hf1a 90% H2O/10% D2O 0 mM 3.5 ambient 298 Bruker AVANCE III HD 700 4 2D 1H-15N HSQC 2 mg/mL Buthitoxin-Hf1a 90% H2O/10% D2O 0 mM 3.5 ambient 298 Bruker AVANCE III HD 700
NMR Spectrometer Information Spectrometer Manufacturer Model Field Strength 1 Bruker AVANCE III HD 700
NMR Refinement Method Details Software simulated annealing Structures were refined in explicit solvent using Cartesian dynamics within CNS. CNS
NMR Ensemble Information Conformer Selection Criteria structures with acceptable covalent geometry 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 Bruker Biospin 2 processing TopSpin Bruker Biospin 3 chemical shift assignment CARA Keller and Wuthrich 4 structure calculation CYANA Guntert, Mumenthaler and Wuthrich 5 refinement CNS 1.21 Brunger, Adams, Clore, Gros, Nilges and Read