7PS8

NMR Structure of the U3 RNA G-quadruplex

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D NOESY	1.5 mM 1H rHIVpro3	90% H2O/10% D2O	35 mM	6.9	1 atm	310	Bruker AVANCE NEO 950
2	2D 1H-1H TOCSY	1.5 mM 1H rHIVpro3	90% H2O/10% D2O	35 mM	6.9	1 atm	310	Bruker AVANCE NEO 600
3	2D 1H-13C HSQC	1.5 mM 1H rHIVpro3	90% H2O/10% D2O	35 mM	6.9	1 atm	310	Bruker AVANCE NEO 950
4	2D 1H-13C HMBC	1.5 mM 1H rHIVpro3	90% H2O/10% D2O	35 mM	6.9	1 atm	310	Bruker AVANCE NEO 600

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE NEO	950
2	Bruker	AVANCE NEO	700
3	Bruker	AVANCE NEO	600

NMR Refinement
Method	Details	Software
simulated annealing		Amber

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	750
Conformers Submitted Total Number	10
Representative Model	1 (lowest energy)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	data analysis	TopSpin		Bruker Biospin
2	chemical shift assignment	Sparky		Goddard
3	structure calculation	ARIA		Linge, O'Donoghue and Nilges
4	refinement	Amber		Case, Darden, Cheatham III, Simmerling, Wang, Duke, Luo, ... and Kollman