2L8H

Chemical probe bound to HIV TAR RNA

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	1H-1H NOESY	1 mM HIV TAR RNA, 4 mM Arginine 4-methoxy-napthylamide	99.99% D2O	10 mM potassium phosphate	6.6	ambient	298
2	1H-1H NOESY with WATERGATE	1 mM HIV TAR RNA, 4 mM Arginine 4-methoxy-napthylamide, 90% H2O, 10% D2O	90% H2O/10% D2O	10 mM potassium phosphate	6.6	ambient	277
3	1H-1H TOCSY	1 mM HIV TAR RNA, 4 mM Arginine 4-methoxy-napthylamide	99.99% D2O	10 mM potassium phosphate	6.6	ambient	298
4	HCCH-COSY	1 mM [U-100% 13C; U-100% 15N] HIV TAR RNA, 4 mM Arginine 4-methoxy-napthylamide	100% D2O	10 mM potassium phosphate	6.6	ambient	298
5	13C HSQC-NOESY	1 mM [U-100% 13C; U-100% 15N] HIV TAR RNA, 4 mM Arginine 4-methoxy-napthylamide	100% D2O	10 mM potassium phosphate	6.6	ambient	298

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	DRX	500
2	Bruker	DMX	600

NMR Refinement
Method	Details	Software
simulated annealing	RDC restraints applied after initial structure calculations	X-PLOR

NMR Ensemble Information
Conformer Selection Criteria	structures with the 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	X-PLOR		Brunger A. T. et.al.