SOLUTION NMR Experimental Data


Experimental Details
Sample Conditions
Sample Contents2mM Helix III hairpin; 5mM Cacodylate buffer (pH 6.5); 100 mM KCl
Solvent90% H2O/10% D2O
Ionic Strength100 mM KCl
pH6.5
Pressureambient
Temperature (K)10
Experiment(s):2D NOESY
Sample Contents2mM Helix III hairpin; 5mM Cacodylate buffer (pH 6.5); 100 mM KCl
Solvent100% D2O
Ionic Strength100 mM KCl
pH6.5
Pressureambient
Temperature (K)30
Experiment(s):2D NOESY, DQF-COSY, 2D_13C_separated_HMQC, 2D_31P_separated_COSY
Spectrometer Information
Manufacturer Model Field Strength
Varian UNITYPLUS 600.0
Varian INOVA 800.0
GE OMEGA 500.0
Varian UNITY 500.0
NMR Refinement
Method torsion angle dynamics
Details In addition to the experimentally derived distance constraints and dihedral angle constraints, the structures were computed using 22 non-experimental constraints to ensure Watson-Crick Base pairing and tetraloop formation.
NMR Ensemble Information
Conformer Selection Criteria structures with acceptable covalent geometry,structures with favorable non-bond energy,structures with the lowest energy
Conformers Calculated Total Number 30
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 techniques.
Computation: NMR Software
# Classification Software Name Author
1 collection VNMR Varian
2 processing version: 95 FELIX Biosym
3 structure solution version: 3.851 X-PLOR Brunger
4 refinement version: 3.851 X-PLOR Brunger