2LV0

Solution Structure of Helix-35 Stem-loop from E. coli 23S rRNA

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	1.2 mM [U-99% 13C; U-99% 15N] RNA, 10 mM potassium phosphate, 10 mM sodium chloride, 0.1 mM EDTA	90% H2O/10% D2O	20	6.8	ambient	283
2	2D 1H-13C HSQC	1.2 mM [U-99% 13C; U-99% 15N] RNA, 10 mM potassium phosphate, 10 mM sodium chloride, 0.1 mM EDTA	100% D2O	20	6.8	ambient	298
3	3D HCCH-TOCSY	1.2 mM [U-99% 13C; U-99% 15N] RNA, 10 mM potassium phosphate, 10 mM sodium chloride, 0.1 mM EDTA	100% D2O	20	6.8	ambient	298
4	3D 1H-13C NOESY	1.2 mM [U-99% 13C; U-99% 15N] RNA, 10 mM potassium phosphate, 10 mM sodium chloride, 0.1 mM EDTA	100% D2O	20	6.8	ambient	298
5	2D 1H-1H NOESY	1.6 mM RNA, 10 mM potassium phosphate, 10 mM sodium chloride, 0.1 mM EDTA	100% D2O	20	6.8	ambient	298
6	2D DQF-COSY	1.6 mM RNA, 10 mM potassium phosphate, 10 mM sodium chloride, 0.1 mM EDTA	100% D2O	20	6.8	ambient	298
7	2D 1H-1H NOESY	1.6 mM RNA, 10 mM potassium phosphate, 10 mM sodium chloride, 0.1 mM EDTA	90% H2O/10% D2O	20	6.8	ambient	283
8	3D HCCH-COSY	1.2 mM [U-99% 13C; U-99% 15N] RNA, 10 mM potassium phosphate, 10 mM sodium chloride, 0.1 mM EDTA	100% D2O	20	6.8	ambient	298
9	2D 1H-31P HetCor	1.6 mM RNA, 10 mM potassium phosphate, 10 mM sodium chloride, 0.1 mM EDTA	100% D2O	20	6.8	ambient	298
10	2D 1H-15N HMQC	1.2 mM [U-99% 13C; U-99% 15N] RNA, 10 mM potassium phosphate, 10 mM sodium chloride, 0.1 mM EDTA	100% D2O	20	6.8	ambient	298
11	2D 1H-13C ctHSQC-31P	1.2 mM [U-99% 13C; U-99% 15N] RNA, 10 mM potassium phosphate, 10 mM sodium chloride, 0.1 mM EDTA	100% D2O	20	6.8	ambient	298
12	2D 1H-15N HCN	1.2 mM [U-99% 13C; U-99% 15N] RNA, 10 mM potassium phosphate, 10 mM sodium chloride, 0.1 mM EDTA	100% D2O	20	6.8	ambient	298
13	3D 1H-15N NOESY	1.2 mM [U-99% 13C; U-99% 15N] RNA, 10 mM potassium phosphate, 10 mM sodium chloride, 0.1 mM EDTA	90% H2O/10% D2O	20	6.8	ambient	283

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Varian	INOVA	600
2	Varian	INOVA	500

NMR Refinement
Method	Details	Software
simulated annealing		X-PLOR NIH

NMR Ensemble Information
Conformer Selection Criteria	target function
Conformers Calculated Total Number	100
Conformers Submitted Total Number	11
Representative Model	1 (closest to the average)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	structure solution	X-PLOR NIH		Schwieters, Kuszewski, Tjandra and Clore
2	refinement	X-PLOR NIH		Schwieters, Kuszewski, Tjandra and Clore
3	processing	Felix		Accelrys Software Inc.
4	refinement	Felix		Accelrys Software Inc.
5	collection	VNMR		Varian
6	refinement	VNMR		Varian