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NMR Structure of the B-DNA Dodecamer CTCGGCGCCATC
NMR Experiment Experiment Type Sample Contents Solvent Ionic Strength pH Pressure Temperature (K) Spectrometer 1 2D NOESY 0.7 mM Oligodeoxynucleotide duplex, 0.1 M NaCl, 10 mM phosphate buffer, and 50 uM Na2EDTA (pH 7.0) 100% D2O 0.1 M NaCl 7.0 1 atm 288 2 Magnitude COSY 0.7 mM Oligodeoxynucleotide duplex, 0.1 M NaCl, 10 mM phosphate buffer, and 50 uM Na2EDTA (pH 7.0) 100% D2O 0.1 M NaCl 7.0 1 atm 288 3 E-COSY 0.7 mM Oligodeoxynucleotide duplex, 0.1 M NaCl, 10 mM phosphate buffer, and 50 uM Na2EDTA (pH 7.0) 100% D2O 0.1 M NaCl 7.0 1 atm 298 4 DQF-COSY 0.7 mM Oligodeoxynucleotide duplex, 0.1 M NaCl, 10 mM phosphate buffer, and 50 uM Na2EDTA (pH 7.0) 100% D2O 0.1 M NaCl 7.0 1 atm 298 5 P-COSY 0.7 mM Oligodeoxynucleotide duplex, 0.1 M NaCl, 10 mM phosphate buffer, and 50 uM Na2EDTA (pH 7.0) 100% D2O 0.1 M NaCl 7.0 1 atm 298 6 2D NOESY 0.7 mM Oligodeoxynucleotide duplex, 0.1 M NaCl, 10 mM phosphate buffer, and 50 uM Na2EDTA (pH 7.0), 90% H2O, 10% D2O 90% H2O/10% D2O 0.1 M NaCl 7.0 1 atm 278
NMR Spectrometer Information Spectrometer Manufacturer Model Field Strength 1 Bruker AVANCE III 800 2 Bruker AVANCE III 500 3 Bruker AVANCE III 600
NMR Refinement Method Details Software distance restraint Constraints
simulated annealing
restrained molecular dynamics X-PLOR
NMR Ensemble Information Conformer Selection Criteria structures with the lowest energy Conformers Calculated Total Number 12 Conformers Submitted Total Number 10 Representative Model 1 (closest to the average)
Additional NMR Experimental Information Details This structure was determined using standard 2D homonuclear techniques
Computation: NMR Software # Classification Version Software Name Author 1 processing Felix 95.0 Accelrys Software Inc. 2 iterative matrix relaxation CORMA 5.2 Keepers 3 refinement X-PLOR 3.1 Brunger 4 iterative matrix relaxation MARDIGRAS 5.2 Borgias