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Helica Structure of DNA by Design: The T(GGGG)T Hexad Alignment
NMR Experiment Experiment Type Sample Contents Solvent Ionic Strength pH Pressure Temperature (K) Spectrometer 1 DQF-COSY synthesized by solid phase phosphoramidite methods, phosphate buffer pH 6.8 H2O 100 mM NaCl 6.8 normal 293 2 2D TOCSY synthesized by solid phase phosphoramidite methods, phosphate buffer pH 6.8 H2O 100 mM NaCl 6.8 normal 293 3 2D NOESY synthesized by solid phase phosphoramidite methods, phosphate buffer pH 6.8 H2O 100 mM NaCl 6.8 normal 293 4 1H,15N HSQC synthesized by solid phase phosphoramidite methods, phosphate buffer pH 6.8 H2O 100 mM NaCl 6.8 normal 273 5 31P,1H HETCOR synthesized by solid phase phosphoramidite methods, phosphate buffer pH 6.8 H2O 100 mM NaCl 6.8 normal 293 6 JR-NOESY synthesized by solid phase phosphoramidite methods, phosphate buffer pH 6.8 H2O 100 mM NaCl 6.8 normal 273
NMR Spectrometer Information Spectrometer Manufacturer Model Field Strength 1 Varian INOVA 600
NMR Refinement Method Details Software simulated annealing, torsion angle dynamics, molecular dynamics X-PLOR
NMR Ensemble Information Conformer Selection Criteria structures with the lowest energy Conformers Calculated Total Number 15 Conformers Submitted Total Number 1 Representative Model 1 (lowest energy)
Additional NMR Experimental Information Details The structure was determine using standard and non-standard homo- and heteronuclear NMR techniques
Computation: NMR Software # Classification Version Software Name Author 1 refinement X-PLOR 2.1 Brunger 2 refinement XPLOR-NIH 2.9.7 Brunger/Schwieters