SOLUTION NMR Experimental Data


Experimental Details
Sample Conditions
Sample Contents2.3 mM U-13C; 20 mM KPi, 20 mM KCl, 0.02 mM EDTA, pH 6.8
Solvent100% D2O
Ionic Strength100 mM
pH6.8
Pressureambient
Temperature (K)301
Experiment(s):3D_13C-separated_NOESY
Sample Contents2.5 mM U-15N; 20 mM KPi, 20 mM KCl, 0.02 mM EDTA, pH 6.8
Solvent10% D2O, 90% H2O
Ionic Strength100 mM
pH6.8
Pressureambient
Temperature (K)301
Experiment(s):DQF-COSY
Sample Contents2.5 mM U-15N; 20 mM KPi, 20 mM KCl, 0.02 mM EDTA, pH 6.8
Solvent10% D2O, 90% H2O
Ionic Strength100 mM
pH6.8
Pressureambient
Temperature (K)280
Experiment(s):3D_15N-separated_NOESY
Sample Contents2.0 mM U-13C,C5-2H; 20 mM KPi, 20 mM KCl, 0.02 mM EDTA, pH 6.8
Solvent100% D2O
Ionic Strength100 mM
pH6.8
Pressureambient
Temperature (K)301
Experiment(s):3D_13C-separated_NOESY
Sample Contents2.8 mM unlabeled 20 mM KPi, 20 mM KCl, 0.02 mM EDTA, pH 6.8
Solvent100% D2O
Ionic Strength100 mM
pH6.8
Pressureambient
Temperature (K)301
Experiment(s):NOESY, HetCor
Spectrometer Information
Manufacturer Model Field Strength
Bruker AMX 500.0
NMR Refinement
Method simulated annealing and molecular dynamics
Details Calculations were performed using 232 conformationally restrictive NOE derived distance constraints and 55 backbone and 15 ribose torsion angle constraints. Base pair constraints were introduced for six base pairs using heavy atom-heavy atom constraints. Coordinates are for the hairpin domain only. 5' flanking (ggccaaa) and 3' flanking (accca) coordinates are not included with this deposition. Few constraints were obtained for these very dynamic regions and although they were included as part of the structure calculation, their conformations appear to be randomly distributed.
NMR Ensemble Information
Conformer Selection Criteria structures with acceptable covalent geometry, structures with the least restraint violations, structures with the lowest energy
Conformers Calculated Total Number 60
Conformers Submitted Total Number 10
Representative Model Choice Rationale
1 closest to the average
Additional NMR Experimental Information
1 This structure was determined using a variety of 2D and 3D homo- and hetero-nuclear NMR methods.
Computation: NMR Software
# Classification Software Name Author
1 processing version: 980 FELIX MSI-Biosym
2 refinement version: 3.851 X-PLOR Brunger, A.