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SOLUTION STRUCTURE OF A TOXIN FROM THE TARANTULA, GRAMMOSTOLA SPATULATA, WHICH INHIBITS MECHANOSENSITIVE ION CHANNELS
NMR Experiment Experiment Type Sample Contents Solvent Ionic Strength pH Pressure Temperature (K) Spectrometer 1 2D NOESY 2 MM NATURAL ABUNDANCE GSMTX4 H2O 1 mM NACL 4.5 AMBIENT 278 2 DQF-COSY 2 MM NATURAL ABUNDANCE GSMTX4 H2O 1 mM NACL 4.5 AMBIENT 278 3 E-COSY 2 MM NATURAL ABUNDANCE GSMTX4 H2O 1 mM NACL 4.5 AMBIENT 278 4 2D TOCSY 2 MM NATURAL ABUNDANCE GSMTX4 H2O 1 mM NACL 4.5 AMBIENT 278 5 1H-13C-HSQC 2 MM NATURAL ABUNDANCE GSMTX4 H2O 1 mM NACL 4.5 AMBIENT 278 6 1H-15N-HSQC 2 MM NATURAL ABUNDANCE GSMTX4 H2O 1 mM NACL 4.5 AMBIENT 278
NMR Spectrometer Information Spectrometer Manufacturer Model Field Strength 1 Varian INOVA 600 2 Varian INOVA 500
NMR Refinement Method Details Software DISTANCE GEOMETRY, SIMULATED ANNEALING, RAMACHANDRAN REFINEMENT X-PLOR
NMR Ensemble Information Conformer Selection Criteria STRUCTURES WITH THE LEAST RESTRAINT VIOLATIONS, STRUCTURES WITH THE LOWEST ENERGY Conformers Calculated Total Number 200 Conformers Submitted Total Number 20 Representative Model 1 (lowest energy)
Additional NMR Experimental Information Details H-D EXCHANGE USING 2D TOCSY FOLLOWING RESUSPENSION OF LYOPHILIZED PROTEIN IN 100% D2O
Computation: NMR Software # Classification Version Software Name Author 1 refinement X-PLOR 3.851 BRUNGER 2 structure solution Felix 2.2 3 structure solution NMRPipe 2.1 Delaglio 4 structure solution Sparky 3.95 Goddard 5 structure solution CNS 2.1 BRUNGER