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Solution structure of Dermaseptin antimicrobial peptide truncated, mutated analog, K4-S4(1-13)a
NMR Experiment Experiment Type Sample Contents Solvent Ionic Strength pH Pressure Temperature (K) Spectrometer 1 DQF-COSY Peptide concentration 2.2mM natural abundance; 20:1 molar ratio of DPC-d38 to peptide; 10% phosphate buffer; 10% D2O; 0.02% NaN3 10% phosphate buffer; 10% D2O; 0.02% NaN3 in triple distilled water 78 mM 7.4 ambient 303 2 2D TOCSY Peptide concentration 2.2mM natural abundance; 20:1 molar ratio of DPC-d38 to peptide; 10% phosphate buffer; 10% D2O; 0.02% NaN3 10% phosphate buffer; 10% D2O; 0.02% NaN3 in triple distilled water 78 mM 7.4 ambient 303 3 2D NOESY Peptide concentration 2.2mM natural abundance; 20:1 molar ratio of DPC-d38 to peptide; 10% phosphate buffer; 10% D2O; 0.02% NaN3 10% phosphate buffer; 10% D2O; 0.02% NaN3 in triple distilled water 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 based on 250 restraints comprising: 83 intraresidual; 78 i,i+1; 34 i,i+2; 37 i,i+3; 18 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)
Additional NMR Experimental Information Details This structure was determined using standard 2D homonuclear techniques.
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, UCSF 4 structure solution X-PLOR 3.856 Nilges, Kuszewski, Brnger 5 data analysis Procheck Laskowski, Rullmannn, MacArthur, Kaptein, Thornton 6 refinement X-PLOR 3.856 Nilges, Kuszewski, Brnger