1PJY

Solution structure of the HIV-1 frameshift inducing stem-loop RNA

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D NOESY	1 mM HIV-1 frameshift inducing stem-loop RNA	90% H2O/10% D2O, or 99.99% D2O	50 mM	6.8	ambient	303
2	2D TOCSY	1 mM HIV-1 frameshift inducing stem-loop RNA	90% H2O/10% D2O, or 99.99% D2O	50 mM	6.8	ambient	303
3	3D_13C-separated_NOESY	1 mM HIV-1 frameshift inducing stem-loop RNA	90% H2O/10% D2O, or 99.99% D2O	50 mM	6.8	ambient	303
4	2D HNN-COSY	1 mM HIV-1 frameshift inducing stem-loop RNA	90% H2O/10% D2O, or 99.99% D2O	50 mM	6.8	ambient	298
5	2D NOESY	1 mM HIV-1 frameshift inducing stem-loop RNA	90% H2O/10% D2O, or 99.99% D2O	50 mM	6.8	ambient	283
6	2D 1H-13C HSQC	1 mM HIV-1 frameshift inducing stem-loop RNA	90% H2O/10% D2O, or 99.99% D2O	50 mM	6.8	ambient	303

NMR Refinement
Method	Details	Software
torsion angle molecular dynamics, Cartesian space simulated annealing and molecular dynamics, residual dipolar coupling		XwinNMR

NMR Ensemble Information
Conformer Selection Criteria	Submitted confermers represent the 20 lowest energy structures with no NOE violations greater than 0.2 Angstroms and no dihedral violations greater than 5 degrees
Conformers Calculated Total Number	100
Conformers Submitted Total Number	20
Representative Model	1 (lowest energy)

Additional NMR Experimental Information
Details	The incorporation of residual dipolar couplings and the direct detection of hydrogen bonds with HNN-COSY were used in solving this structure

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	XwinNMR	2.6
2	refinement	CNS	1.1	Brunger
3	processing	Felix	98
4	data analysis	Sparky	3.72