2O83

The Structure of Tandem GA RNA Pairs When Flanking Pairs are isoG-isoC Pairs

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D NOESY	80 mM NaCl, 10 mM sodium phosphate, 0.5 mM Na2EDTA, pH 7.1, 0.7mM RNA duplex concentration, 90% H2O, 10% D2O	90% H2O/10% D2O		7.1		278
2	2D TOCSY	80 mM NaCl, 10 mM sodium phosphate, 0.5 mM Na2EDTA, pH 7.1, 0.7mM RNA duplex concentration, 90% H2O, 10% D2O	90% H2O/10% D2O		7.1		278
3	DQF-COSY	80 mM NaCl, 10 mM sodium phosphate, 0.5 mM Na2EDTA, pH 7.1, 0.7mM RNA duplex concentration, 90% H2O, 10% D2O	90% H2O/10% D2O		7.1		278

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Varian	INOVA	600
2	Varian	INOVA	500

NMR Refinement
Method	Details	Software
simulated annealing, molecular dynamics		VNMR

NMR Ensemble Information
Conformer Selection Criteria	structures with the least restraint violations,structures with the lowest energy
Conformers Calculated Total Number	20
Conformers Submitted Total Number	18
Representative Model	1 (lowest energy)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	VNMR	6.1C	Varian
2	processing	NMRPipe	2.3	Delagio, F.
3	data analysis	Sparky	3.11	Goddard, T.D.; Kneller, D.G.
4	structure solution	Discover	I2000	Molecular Simulations, Inc.
5	refinement	Discover	I2000	Molecular Simulations, Inc.