2JXV

Solution structure of a let-7 miRNA:lin-41 mRNA complex from C. elegans

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D NOESY	2 mM [U-13C; U-15N] RNA, 10 mM sodium phosphate, 20 mM NaCl	95% H2O/5% D2O	20 mM NaCl	6.7	ambient	298
2	2D 15N-HSQC	2 mM [U-13C; U-15N] RNA, 10 mM sodium phosphate, 20 mM NaCl	95% H2O/5% D2O	20 mM NaCl	6.7	ambient	298
3	2D 13C-HSQC	2 mM [U-13C; U-15N] RNA, 10 mM sodium phosphate, 20 mM NaCl	95% H2O/5% D2O	20 mM NaCl	6.7	ambient	298
4	2D DQF-COSY	2 mM [U-13C; U-15N] RNA, 10 mM sodium phosphate, 20 mM NaCl	95% H2O/5% D2O	20 mM NaCl	6.7	ambient	298
5	2D HNN-COSY	2 mM [U-13C; U-15N] RNA, 10 mM sodium phosphate, 20 mM NaCl	95% H2O/5% D2O	20 mM NaCl	6.7	ambient	298
6	2D TOSCY	2 mM [U-13C; U-15N] RNA, 10 mM sodium phosphate, 20 mM NaCl	95% H2O/5% D2O	20 mM NaCl	6.7	ambient	298
7	2D 1H-31P COSY	2 mM [U-13C; U-15N] RNA, 10 mM sodium phosphate, 20 mM NaCl	95% H2O/5% D2O	20 mM NaCl	6.7	ambient	298
8	2D 15N-IPAP-HSQC	2 mM [U-13C; U-15N] RNA, 10 mM sodium phosphate, 20 mM NaCl	95% H2O/5% D2O	20 mM NaCl	6.7	ambient	298
9	3D HCCH-TOCSY	2 mM [U-13C; U-15N] RNA, 10 mM sodium phosphate, 20 mM NaCl	95% H2O/5% D2O	20 mM NaCl	6.7	ambient	298
10	3D HCCH-COSY	2 mM [U-13C; U-15N] RNA, 10 mM sodium phosphate, 20 mM NaCl	95% H2O/5% D2O	20 mM NaCl	6.7	ambient	298
11	3D 13C-SEPARATED NOESY	2 mM [U-13C; U-15N] RNA, 10 mM sodium phosphate, 20 mM NaCl	95% H2O/5% D2O	20 mM NaCl	6.7	ambient	298

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Varian	NMR System	800
2	Varian	INOVA	600

NMR Refinement
Method	Details	Software
simulated annealing, energy minimization	693 NOE-derived distance restraints, 130 torsion angle restraints, 51 residual dipolar coupling restraints, 32 hydrogen bond restraints and 22 planarity restraints.	Amber

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy and least restraint violations
Conformers Calculated Total Number	100
Conformers Submitted Total Number	10
Representative Model	1 (closest to the average)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	refinement	Amber	9	Case, Darden, Cheatham, III, Simmerling, Wang, Duke, Luo, Kollman
2	processing	Felix	2002	Accelrys Software Inc.
3	collection	VnmrJ	2.1B	Varian