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A 3D-structural model of unsulphated chondroitin from high-field NMR: 4-sulphation has little effect on backbone conformation
NMR Experiment Experiment Type Sample Contents Solvent Ionic Strength pH Pressure Temperature (K) Spectrometer 1 2D 1H-15N HSQC 5-10 mM [U-15N] unsulphated chondroitin 90% H2O/10% D2O 6.0 ambient 298 2 2D 1H-13C HSQC 5-10 mM [U-15N] unsulphated chondroitin 90% H2O/10% D2O 6.0 ambient 298 3 2D 1H-1H TOCSY 5-10 mM [U-15N] unsulphated chondroitin 90% H2O/10% D2O 6.0 ambient 298 4 2D 1H-1H COSY 5-10 mM [U-15N] unsulphated chondroitin 90% H2O/10% D2O 6.0 ambient 298 5 2D 1H-1H NOESY 5-10 mM [U-15N] unsulphated chondroitin 90% H2O/10% D2O 6.0 ambient 298
NMR Spectrometer Information Spectrometer Manufacturer Model Field Strength 1 Bruker AVANCE 600 2 Varian INOVA 900
NMR Refinement Method Details Software simulated annealing 750 nanoseconds explicit solvent (TIP3P) molecular dynamics simulated annealing within the NPT ensemble Amber
NMR Ensemble Information Conformer Selection Criteria structures with the lowest energy Conformers Calculated Total Number 250 Conformers Submitted Total Number 25 Representative Model 1 (lowest energy)
Computation: NMR Software # Classification Version Software Name Author 1 refinement Amber 10 Case, D. et al.