2N7M

NMR-SAXS/WAXS Structure of the core of the U4/U6 di-snRNA

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D 1H-15N HSQC	0.6 mM [U-13C; U-15N]-Gua, -Ura RNA (92-MER), 0.02 mM potassium chloride, 0.02 mM potassium phosphate	95% H2O/5% D2O	58.5	7.0	ambient	298
2	2D 1H-15N HSQC	0.6 mM [U-13C; U-15N]-Gua, -Ura RNA (92-MER), 0.02 mM potassium chloride, 0.02 mM potassium phosphate, 5 mg/mL Pf1 phage	95% H2O/5% D2O	58.5	7.0	ambient	298
3	2D 1H-13C HSQC	0.7 mM [U-13C; U-15N]-Ade RNA (92-MER), 0.02 mM potassium chloride, 0.02 mM potassium phosphate	95% H2O/5% D2O	58.5	7.0	ambient	303
4	2D 1H-13C HSQC	0.7 mM [U-13C; U-15N]-Ade RNA (92-MER), 0.02 mM potassium chloride, 0.02 mM potassium phosphate, 5 mg/mL Pf1 phage	95% H2O/5% D2O	58.5	7.0	ambient	303

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Agilent	INOVA	900
2	Agilent	INOVA	800
3	Bruker	DMX	750
4	Bruker	AVANCE	600
5	Bruker	AVANCE	500

NMR Refinement
Method	Details	Software
torsion angle dynamics, simulated annealing		NMRPipe

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	processing	NMRPipe		Delaglio, Grzesiek, Vuister, Zhu, Pfeifer and Bax
2	refinement	X-PLOR NIH		Schwieters, Kuszewski, Tjandra and Clore
3	peak picking	NMRDraw		Delaglio, Grzesiek, Vuister, Zhu, Pfeifer and Bax