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NMR solution structure of the Dermaseptin antimicrobial peptide analog NC12-K4S4(1-13)a
NMR Experiment Experiment Type Sample Contents Solvent Ionic Strength pH Pressure Temperature (K) Spectrometer 1 DQF-COSY 2.2mM peptide; 20:1 molar ratio of DPC-d38 (Cambridge Isotope Laboratories, Inc., USA); 0.02% NaN3 90% of 10% strength PBS solution, 10% D2O 78 mM 7.4 ambient 303 2 2D TOCSY 2.2mM peptide; 20:1 molar ratio of DPC-d38 (Cambridge Isotope Laboratories, Inc., USA); 0.02% NaN3 90% of 10% strength PBS solution, 10% D2O 78 mM 7.4 ambient 303 3 2D NOESY 2.2mM peptide; 20:1 molar ratio of DPC-d38 (Cambridge Isotope Laboratories, Inc., USA); 0.02% NaN3 90% of 10% strength PBS solution, 10% D2O 78 mM 7.4 ambient 303
NMR Spectrometer Information Spectrometer Manufacturer Model Field Strength 1 Bruker DMX 600
NMR Refinement Method Details Software Distance Geometry, Simulated Annealing The structures are derived from 241 NOE constraints; 109 intraresidual; 44 i+1; 19 i+2; 39 i+3; 30 long-range. XwinNMR
NMR Ensemble Information Conformer Selection Criteria structures with the lowest energy, structures with the least restraint violations Conformers Calculated Total Number 50 Conformers Submitted Total Number 15 Representative Model 1 (lowest energy)
Computation: NMR Software # Classification Version Software Name Author 1 collection XwinNMR 3.1 Bruker 2 processing XwinNMR 3.1 Bruker 3 data analysis Sparky 3 Goddard and Kneller 4 structure solution X-PLOR 3.856 Nilges, Kuszewski and Brnger 5 data analysis Procheck Laskowski, Rullmannn, MacArthur, Kaptein and Thornton 6 refinement X-PLOR 3.856 Nilges, Kuszewski and Brnger