1SYZ

Solution structure of the S. Cerevisiae U6 intramolecular stem loop (ISL) RNA at pH 5.7

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D NOESY	0.8-1.2 mM RNA, 50 mM NaCl, pH 5.7	H2O	50 mM NaCl	5.7	Ambient	285
2	2D NOESY	0.8-1.2 mM RNA, 50 mM NaCl, pH 5.7	D2O	50 mM NaCl	5.7	Ambient	303
3	2D TOCSY	0.8-1.2 mM RNA, 50 mM NaCl, pH 5.7	D2O	50 mM NaCl	5.7	Ambient	303
4	1H-13C HSQC	0.8-1.2 mM RNA, 50 mM NaCl, pH 5.7	D2O	50 mM NaCl	5.7	Ambient	303

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	DMX	750
2	Bruker	DMX	600
3	Bruker	DMX

NMR Refinement
Method	Details	Software
XPLOR-NIH 2.0.6.	Method allowed for the incorporation of 29 residual dipolar couplings into the structure refinement process.	CNS

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	100
Conformers Submitted Total Number	14
Representative Model	1 (lowest energy)

Additional NMR Experimental Information
Details	13C, 15N Istopically labelled RNA

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	structure solution	CNS	1.1	Brunger, A. et al.
2	refinement	XPLORNIH	2.0.6.	Clore, G.M. et. al.
3	collection	X-PLOR	2.6	Bruker Biospin
4	data analysis	Sparky	3.0	Goddard, T.D. et. al.