SOLUTION NMR Experimental Data


Experimental Details
Sample Conditions
Sample Contents5 mM dG4T4G3 per strand; 90%H2O, 10% D2O; 50 mM NaCl; pH 7.2
Solvent90% H2O/10% D2O
Ionic Strength50 mM
pH7.2
Pressureambient
Temperature (K)273
Experiment(s):2D NOESY
Sample Contents5 mM dG4T4G3 per strand; 90%H2O, 10% D2O; 50 mM NaCl; pH 7.2
Solvent90% H2O/10% D2O
Ionic Strength50 mM
pH7.2
Pressureambient
Temperature (K)298
Experiment(s):PE-COSY, 2D TOCSY
Spectrometer Information
Manufacturer Model Field Strength
Varian INOVA 600.0
Bruker DRX 500.0
NMR Refinement
Method simulated annealing, molecular dynamics
Details 517 NOE-derived distance restraints associated with the nonexchangeable and exchangeable protons; 24 hydrogen-bond restraints; 95 torsion angle restraints for sugar moieties. Thirty 250 ps simulated annealing calculations at 800 K were initially performed. Further refinement via solvated MD simulations (750ps, TIP3P water, particle mesh Ewald method) followed by energy minimization.
NMR Ensemble Information
Conformer Selection Criteria structures with the least restraint violations, structures with the lowest energy
Conformers Calculated Total Number 30
Conformers Submitted Total Number 10
Representative Model Choice Rationale
1 fewest violations, lowest energy
Additional NMR Experimental Information
1 This structure was determined using standard 2D homonuclear techniques.
Computation: NMR Software
# Classification Software Name Author
1 collection version: 6.1A VNMR --
2 processing version: 2000 FELIX --
3 refinement version: 6.0 AMBER Kollman et.al.