2N7X

Solution structure of microRNA 20b pre-element

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D 1H-1H NOESY	1 mM miR-20b, 10 mM sodium phosphate, 20 mM sodium chloride	90% H2O/10% D2O		6.5	ambient atm	279
2	2D 1H-1H NOESY	1 mM miR-20b, 10 mM sodium phosphate, 20 mM sodium chloride	100% D2O		6.5	ambient atm	298
3	2D 1H-1H TOCSY	1 mM miR-20b, 10 mM sodium phosphate, 20 mM sodium chloride	100% D2O		6.5	ambient atm	298
4	2D 1H-13C HSQC	1 mM [U-99% 13C; U-99% 15N] miR-20b, 10 mM sodium phosphate, 20 mM sodium chloride	100% D2O		6.5	ambient atm	298
5	3D 1H-13C NOESY	1 mM [U-99% 13C; U-99% 15N] miR-20b, 10 mM sodium phosphate, 20 mM sodium chloride	100% D2O		6.5	ambient atm	298
6	2D 1H-15N HSQC	1 mM [U-99% 13C; U-99% 15N] miR-20b, 10 mM sodium phosphate, 20 mM sodium chloride	90% H2O/10% D2O		6.5	ambient atm	279

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

NMR Refinement
Method	Details	Software
restrained simulated annealing		TopSpin

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	collection	TopSpin		Bruker Biospin
2	structure solution	CYANA		Guntert, Mumenthaler and Wuthrich
3	chemical shift assignment	CcpNMR		CCPN
4	peak picking	CcpNMR		CCPN
5	data analysis	CcpNMR		CCPN
6	refinement	Amber		Case, Darden, Cheatham, III, Simmerling, Wang, Duke, Luo, ... and Kollman
7	processing	NMRPipe		Delaglio, Grzesiek, Vuister, Zhu, Pfeifer and Bax
8	geometry optimization	TALOS		Cornilescu, Delaglio and Bax