SOLUTION NMR Experimental Data

Experimental Details
Sample Conditions
Sample Contents0.9mM complex of NCSi-glu-bulge DNA; 10 mM phophate buffer containing 0.1 mM EDTA, pH 6.0
Solvent90% H2O-10% D2O, 100% D2O
Ionic Strength10 mM Sodium Phosphate, 0.1 mM EDTA, pH 6.0
Temperature (K)268
Experiment(s):2D NOESY, 2D TOCSY, DQF-COSY, H-P Cosy, COSY-45, T1 measurement, Translational diffusion constant measurement
Spectrometer Information
Manufacturer Model Field Strength
Bruker AMX 600.0
Bruker AMX 600.0
NMR Refinement
Method distance geometry, simulated annealing, restrained molecular dynamics
Details the structure calculation was based on a total of 316 restraints, 258 NOE-derived distance constraints, 40 of dihedral angle restraints, and 18 distance restraints from hydrogen bonds of Wason-Creek base pairs.
NMR Ensemble Information
Conformer Selection Criteria all calculated structures submitted, back calculated data agree with experimental NOESY spectrum, structures with acceptable covalent geometry, structures with favorable non-bond energy, structures with the least restraint violations, structures with the lowest energy
Conformers Calculated Total Number 9
Conformers Submitted Total Number 9
Representative Model Choice Rationale
1 closest to the average
Additional NMR Experimental Information
1 This structure was determined using standard 2D homonuclear and heteronuclear (1H-31P) techniques. Diffusion constant measurement experiment was used to address the conformation of the complex adopting either homoduplex or self-folded hairpin form.
Computation: NMR Software
# Classification Software Name Author
1 refinement X-PLOR 3.851 Axel T. Brunger
2 data analysis MARDIGRAS 3.0 Brandan A. Borgias, Paul D. Thomas, He Liu, Anil Kumar
3 structure solution X-PLOR 3.851 Axel T. Brunger
4 processing FELIX 98 and 2000 Accelrys
5 collection UXNMR Aspect X32 Bruker