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Structure of a dual-target spider toxin
NMR Experiment Experiment Type Sample Contents Solvent Ionic Strength pH Pressure Temperature (K) Spectrometer 1 3D_15N-separated_NOESY 1 mM U-15N,13C hybrid atracotoxin; 50 mM NaCl; 20 mM sodium phosphate, 90% H2O,10% D2O 90% H2O/10% D2O 50 mM NaCl, 20 mM NaPi 6.0 1 atm 298 2 HNHA 1 mM U-15N,13C hybrid atracotoxin; 50 mM NaCl; 20 mM sodium phosphate, 90% H2O,10% D2O 90% H2O/10% D2O 50 mM NaCl, 20 mM NaPi 6.0 1 atm 298 3 HNHB 1 mM U-15N,13C hybrid atracotoxin; 50 mM NaCl; 20 mM sodium phosphate, 90% H2O,10% D2O 90% H2O/10% D2O 50 mM NaCl, 20 mM NaPi 6.0 1 atm 298 4 3D_13C-separated_NOESY 1 mM U-15N,13C hybrid atracotoxin; 50 mM NaCl; 20 mM sodium phosphate 100% D2O 50 mM NaCl, 20 mM NaPi 6.0 1 atm 298
NMR Spectrometer Information Spectrometer Manufacturer Model Field Strength 1 Varian INOVA 600 2 Varian INOVA 500
NMR Refinement Method Details Software torsion angle dynamics (CYANA) followed by simulated annealing (X-PLOR) NMRPipe
NMR Ensemble Information Conformer Selection Criteria structures with the lowest energy Conformers Calculated Total Number 60 Conformers Submitted Total Number 25 Representative Model 1 (lowest energy)
Additional NMR Experimental Information Details Dihedral-angle restraints were generated from TALOS analysis of chemical shift data.
Computation: NMR Software # Classification Version Software Name Author 1 processing NMRPipe Delaglio, F., Grzesiek, S., Vuister, G.W., Zhu, G., Pfeifer, J., and Bax, A. 2 data analysis XEASY Xia, T.-H. and Bartels, C. 3 structure solution CYANA 1.1 Guntert, P. and Herrman, T. 4 refinement X-PLOR 3.851 Brunger, A.