SOLUTION NMR Experimental Data


Experimental Details
Sample Conditions
Sample Contents1mM unmodified U2 snNRA - intron branch site duplex, 10mM sodium phosphate, 0.1mM EDTA
Solvent90% H2O, 10% D2O
Ionic Strength50mM sodium chloride
pH6.4
Pressureambient
Temperature (K)278
Experiment(s):2D NOESY
Sample Contents1mM unmodified U2 snNRA - intron branch site duplex, 10mM sodium phosphate, 0.1mM EDTA
Solvent100% D2O
Ionic Strength50mM sodium chloride
pH6.4
Pressureambient
Temperature (K)293
Experiment(s):2D NOESY, 2D TOCSY, DQF-COSY
Spectrometer Information
Manufacturer Model Field Strength
Varian UNITYplus 720.0
NMR Refinement
Method torsion angle molecular dynamics, followed by congugate gradient minimization
NMR Ensemble Information
Conformer Selection Criteria structures with the lowest energy
Conformers Calculated Total Number 300
Conformers Submitted Total Number 10
Representative Model Choice Rationale
1 lowest energy
Additional NMR Experimental Information
1 This structure was determined using standard 2D homonuclear techniques. NOESY spectra were collected at many different mixing times to assess the buildup rate of each NOE, thereby resolving some of the spectral overlap.
Computation: NMR Software
# Classification Software Name Author
1 refinement X-PLOR 3.851 Brunger
2 structure solution X-PLOR 3.851 Brunger
3 data analysis SPARKY 3.69 T.D. Goddard and D.G. Kneller
4 collection VNMR 5.3 Varian, Inc.