2M22

Solution structure of the helix II template boundary element from Tetrahymena telomerase RNA

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	11echo and watergate	0.6-1.0 mM unlabeled RNA (5'-R(*GP*GP*CP*AP*GP*AP*UP*CP*UP*GP*UP*AP*AP*UP*AP*GP*AP*AP*CP*UP*GP*CP*C)-3'), 10 mM sodium phosphate, 30 mM potassium chloride, 50 uM EDTA, 0.2 % sodium azide	90% H2O/10% D2O or 100% D2O	30	6.3	ambient	298
2	2D TOCSY	0.6-1.0 mM unlabeled RNA (5'-R(*GP*GP*CP*AP*GP*AP*UP*CP*UP*GP*UP*AP*AP*UP*AP*GP*AP*AP*CP*UP*GP*CP*C)-3'), 10 mM sodium phosphate, 30 mM potassium chloride, 50 uM EDTA, 0.2 % sodium azide	90% H2O/10% D2O or 100% D2O	30	6.3	ambient	283
3	2D NOESY	0.6-1.0 mM unlabeled RNA (5'-R(*GP*GP*CP*AP*GP*AP*UP*CP*UP*GP*UP*AP*AP*UP*AP*GP*AP*AP*CP*UP*GP*CP*C)-3'), 10 mM sodium phosphate, 30 mM potassium chloride, 50 uM EDTA, 0.2 % sodium azide	90% H2O/10% D2O or 100% D2O	30	6.3	ambient	283
4	2D 15N-HMQC, 2D 15N-CPMG-NOESY, 2D JNN-HNN-COSY	0.6-1.0 mM 13C,15N uniformly labelled RNA (5'-R(*GP*GP*CP*AP*GP*AP*UP*CP*UP*GP*UP*AP*AP*UP*AP*GP*AP*AP*CP*UP*GP*CP*C)-3'), 10 mM sodium phosphate, 30 mM potassium chloride, 50 uM EDTA, 0.2 % sodium azide	90% H2O/10% D2O or 100% D2O	30	6.3	ambient	298
5	2D 13C-HSQCs	0.6-1.0 mM 13C,15N uniformly labelled RNA (5'-R(*GP*GP*CP*AP*GP*AP*UP*CP*UP*GP*UP*AP*AP*UP*AP*GP*AP*AP*CP*UP*GP*CP*C)-3'), 10 mM sodium phosphate, 30 mM potassium chloride, 50 uM EDTA, 0.2 % sodium azide	90% H2O/10% D2O or 100% D2O	30	6.3	ambient	283
6	2D HCCH COSY, 3D HCCH-TOCSY	0.6-1.0 mM 13C,15N uniformly labelled RNA (5'-R(*GP*GP*CP*AP*GP*AP*UP*CP*UP*GP*UP*AP*AP*UP*AP*GP*AP*AP*CP*UP*GP*CP*C)-3'), 10 mM sodium phosphate, 30 mM potassium chloride, 50 uM EDTA, 0.2 % sodium azide	90% H2O/10% D2O or 100% D2O	30	6.3	ambient	283
7	3D 1H,13C HMQCs	0.6-1.0 mM 13C,15N uniformly labelled RNA (5'-R(*GP*GP*CP*AP*GP*AP*UP*CP*UP*GP*UP*AP*AP*UP*AP*GP*AP*AP*CP*UP*GP*CP*C)-3'), 10 mM sodium phosphate, 30 mM potassium chloride, 50 uM EDTA, 0.2 % sodium azide	90% H2O/10% D2O or 100% D2O	30	6.3	ambient	283

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE	800
2	Bruker	DRX	600
3	Bruker	DRX	500

NMR Refinement
Method	Details	Software
simulated annealing	residual polar couplings	X-PLOR NIH

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	100
Conformers Submitted Total Number	20
Representative Model	1 (lowest energy)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	structure solution	X-PLOR NIH	2.9.8	Schwieters, Kuszewski, Tjandra and Clore
2	refinement	X-PLOR NIH	2.9.8	Schwieters, Kuszewski, Tjandra and Clore
3	data analysis	Sparky		Goddard
4	peak picking	Sparky		Goddard
5	collection	XwinNMR		Bruker Biospin
6	processing	XwinNMR		Bruker Biospin