2LHP

High resolution NMR solution structure of helix H1 of the chimpanzee HAR1 RNA

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	0.4 mM [U-100% 15N] RNA (37-MER), 50 mM potassium chloride, 25 mM potassium phosphate	90% H2O/10% D2O	75	6.2	ambient	278
2	2D HNN-COSY	0.4 mM [U-100% 15N] RNA (37-MER), 50 mM potassium chloride, 25 mM potassium phosphate	90% H2O/10% D2O	75	6.2	ambient	278
3	2D 1H-1H NOESY	0.6 mM RNA (37-MER), 50 mM potassium chloride, 25 mM potassium phosphate	90% H2O/10% D2O	75	6.2	ambient	278
4	3D 1H-13C-13C-TROSY relayed HCCH-COSY	1 mM [U-13C; U-15N]-Cyt,Gua RNA (37-MER), 50 mM potassium chloride, 25 mM potassium phosphate	90% H2O/10% D2O	75	6.2	ambient	298
5	2D 1H-13C HSQC	1 mM [U-13C; U-15N]-Cyt,Gua RNA (37-MER), 50 mM potassium chloride, 25 mM potassium phosphate	100% D2O	75	6.2	ambient	298
6	2D 1H-1H NOESY	0.6 mM RNA (37-MER), 50 mM potassium chloride, 25 mM potassium phosphate	90% H2O/10% D2O	75	6.2	ambient	298
7	2D DQF-COSY	0.6 mM RNA (37-MER), 50 mM potassium chloride, 25 mM potassium phosphate	90% H2O/10% D2O	75	6.2	ambient	298
8	3D 1H-13C NOESY	1 mM [U-13C; U-15N]-Cyt,Gua RNA (37-MER), 50 mM potassium chloride, 25 mM potassium phosphate	100% D2O	75	6.2	ambient	278
9	2D 1H-13C HCCNH-TOCSY	0.3 mM [U-13C; U-15N]-Ade,Ura RNA (37-MER), 50 mM potassium chloride, 25 mM potassium phosphate	90% H2O/10% D2O	75	6.2	ambient	278
10	3D HCP	1 mM [U-13C; U-15N]-Cyt,Gua RNA (37-MER), 50 mM potassium chloride, 25 mM potassium phosphate	100% D2O	75	6.2	ambient	298
11	2D 1H-31P COSY	1 mM [U-13C; U-15N]-Cyt,Gua RNA (37-MER), 50 mM potassium chloride, 25 mM potassium phosphate	100% D2O	75	6.2	ambient	298
12	3D forward-directed HCC-TOCSY-CCH E.COSY	1 mM [U-13C; U-15N]-Cyt,Gua RNA (37-MER), 50 mM potassium chloride, 25 mM potassium phosphate	100% D2O	75	6.2	ambient	298
13	2D H(C)N	1 mM [U-13C; U-15N]-Cyt,Gua RNA (37-MER), 50 mM potassium chloride, 25 mM potassium phosphate	100% D2O	75	6.2	ambient	298
14	2D HNCO	1 mM [U-13C; U-15N]-Cyt,Gua RNA (37-MER), 50 mM potassium chloride, 25 mM potassium phosphate	90% H2O/10% D2O	75	6.2	ambient	278
15	3D HCCH-TOCSY	1 mM [U-13C; U-15N]-Cyt,Gua RNA (37-MER), 50 mM potassium chloride, 25 mM potassium phosphate	100% D2O	75	6.2	ambient	298

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE	950
2	Bruker	AVANCE	900
3	Bruker	AVANCE	800
4	Bruker	AVANCE	700
5	Bruker	AVANCE	600

NMR Refinement
Method	Details	Software
simulated annealing, energy minimization		ARIA

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	200
Conformers Submitted Total Number	10
Representative Model	1 (lowest energy)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	refinement	ARIA	1.2	Linge, O'Donoghue and Nilges
2	collection	TopSpin	2.1	Bruker Biospin
3	processing	TopSpin	2.1	Bruker Biospin
4	data analysis	Sparky	3.113	Goddard
5	refinement	CNS	1.1	Brunger, Adams, Clore, Gros, Nilges and Read