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SOLUTION STRUCTURE OF TOXIN CN12 FROM CENTRUROIDES NOXIUS ALFA SCORPION TOXIN ACTING ON SODIUM CHANNELS. NMR STRUCTURE
NMR Experiment Experiment Type Sample Contents Solvent Ionic Strength pH Pressure Temperature (K) Spectrometer 1 DQF COSY, 2D TOCSY, AND 2D NOSEY 0.6 mM in H2O/D2O 90:10%; 90% H2O and 10% D2O none 3.1 ambient 300 2 DQF-COSY, 2D TOCSY, AND 2D NOESY 0.6 mM in 100% D2O 100% D2O none 3.1 ambient 300
NMR Spectrometer Information Spectrometer Manufacturer Model Field Strength 1 Varian UNITYPLUS 500
NMR Refinement Method Details Software simulated annealing SEE JOURNAL REFERENCE CNS
NMR Ensemble Information Conformer Selection Criteria NO RESTRAINT VIOLATIONS LESS THAN 0.2 ANGSTROMS AND MIMINUM ENERGY LESS THAN 115.0 KCAL/MOL BEST REPRESENTATIVE CONFORMER IN THIS ENSEMBLE: 1 Conformers Calculated Total Number 250 Conformers Submitted Total Number 19 Representative Model 1 (minimized average structure)
Additional NMR Experimental Information Details THE STRUCTURE WAS DETERMINED USING HOMONUCLEAR 1H-1H 2D NMR ON THE NATURAL TOXIN EXTRACTED FROM THE SCORPION VENOM
Computation: NMR Software # Classification Version Software Name Author 1 refinement CNS 1.1 BRUNGER 2 processing NMRPipe 1 DELAGLIO 3 collection VNMR 6.1c VARIAN