SOLUTION NMR Experimental Data


Experimental Details
Sample Conditions
Sample Contents1 mM RNA; 10 mM sodium phosphate buffer; 50 mM sodium chloride
SolventD2O
Ionic Strength10 mM sodium phosphate & 50 mM NaCl
pH6.4
Pressureambient
Temperature (K)303
Experiment(s):2D NOESY, DQF-COSY, 2D TOCSY, natural abundance 13C-HMQC
Sample Contents1 mM RNA; 10 mM sodium phosphate buffer; 50 mM sodium chloride
Solvent90% H2O, 10% D2O
Ionic Strength10 mM sodium phosphate & 50 mM NaCl
pH6.4
Pressureambient
Temperature (K)293
Experiment(s):2D NOESY
Spectrometer Information
Manufacturer Model Field Strength
Varian INOVA 600.0
NMR Refinement
Method complete relaxation matrix; random error analysis of NOE; torsion angle dynamics; simulated annealing using Metropolis Monte Carlo; restrained minimization
Details Structures are based on 200 distance restraints, of which 140 are quantitative bounds for nonexchangeable protons calculated with MARDIGRAS, 56 are upper bounds for exchangeable protons, and 4 are hydrogen bond restraints.
NMR Ensemble Information
Conformer Selection Criteria Lowest total energy (a weighted sum of conformational energy and restraint energy).
Conformers Calculated Total Number 15
Conformers Submitted Total Number 10
Representative Model Choice Rationale
1 lowest total energy
Additional NMR Experimental Information
1 This structure was determined using standard 2D homonuclear techniques and complete relaxation matrix analysis of NOE intensities.
Computation: NMR Software
# Classification Software Name Author
1 refinement miniCarlo n/a Ulyanov et al.
2 refinement DYANA 1.5 Guentert
3 iterative matrix relaxation MARDIGRAS 3.2 Borgias et al.
4 data analysis Sparky 3.0 Goddard & Kneller
5 processing NMRPipe 2.1 Delaglio
6 collection VNMR 6.1 Varian Associates, Inc.