7A3Y

RNA duplex with a cytosine bulge in complex with berberine

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D NOESY	0.3 mM RNA-A chain A, 0.3 mM RNA-A chain B, 100 mM sodium chloride, 10 mM sodium phosphate, 1 mM EDTA	90% H2O/10% D2O	110 mM	7	1 atm	298	Varian VNMRS800 800
2	2D 1H-1H TOCSY	0.3 mM RNA-A chain A, 0.3 mM RNA-A chain B, 100 mM sodium chloride, 10 mM sodium phosphate, 1 mM EDTA	90% H2O/10% D2O	110 mM	7	1 atm	298	Varian VNMRS800 800

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Varian	VNMRS800	800

NMR Refinement
Method	Details	Software
simulated annealing		Amber

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	100
Conformers Submitted Total Number	10
Representative Model	1 (lowest energy)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	chemical shift assignment	CcpNmr Analysis	3.0.1	CCPN
2	structure calculation	Amber	20	Case, Darden, Cheatham III, Simmerling, Wang, Duke, Luo, ... and Kollman