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NMR STRUCTURE OF OMEGA-CONOTOXIN MVIIA: CONSTRAINTS ON DISULPHIDE BRIDGES
NMR Experiment Experiment Type Sample Contents Solvent Ionic Strength pH Pressure Temperature (K) Spectrometer 1 2D NOESY 1 H2O (10% D2O) 0 3.5 ambient 283 2 2D COSY 1 H2O (10% D2O) 0 3.5 ambient 283 3 2D HOHAHA 1 H2O (10% D2O) 0 3.5 ambient 283 4 2D 13C-1H HSQC 1 H2O (10% D2O) 0 3.5 ambient 283
NMR Spectrometer Information Spectrometer Manufacturer Model Field Strength 1 Bruker AMX 500 2 Bruker DRX 600
NMR Refinement Method Details Software simulated annealing substructure embedding by distance geometry, simulated annealing regularisation of full structure, simulated annealing refinement XwinNMR
NMR Ensemble Information Conformer Selection Criteria structures with the lowest energy Conformers Calculated Total Number 500 Conformers Submitted Total Number 32 Representative Model 1 (lowest energy)
Additional NMR Experimental Information Details temperature dependence of chemcial shifts, NH exchange into D2O, relaxation measurements at 500 and 600 MHz
Computation: NMR Software # Classification Version Software Name Author 1 collection XwinNMR 1.2 Bruker 2 processing Felix 2.10 D. Hare 3 structure solution X-PLOR 3.1 A. Bruenger 4 refinement X-PLOR 3.1 A. Bruenger