2HKC

NMR Structure of the IQ-modified Dodecamer CTCGGC[IQ]GCCATC

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D NOESY	0.7 mM modified duplex, 10 mM phosphate buffer, 0.1 M NaCl, 0.05 mM Na2EDTA	100% D2O	0.1 M NaCl	7.0	1 atm	288
2	Magnitude COSY	0.7 mM modified duplex, 10 mM phosphate buffer, 0.1 M NaCl, 0.05 mM Na2EDTA	100% D2O	0.1 M NaCl	7.0	1 atm	288
3	E-COSY	0.7 mM modified duplex, 10 mM phosphate buffer, 0.1 M NaCl, 0.05 mM Na2EDTA	100% D2O	0.1 M NaCl	7.0	1 atm	298
4	DQF-COSY	0.7 mM modified duplex, 10 mM phosphate buffer, 0.1 M NaCl, 0.05 mM Na2EDTA	100% D2O	0.1 M NaCl	7.0	1 atm	298
5	P-COSY	0.7 mM modified duplex, 10 mM phosphate buffer, 0.1 M NaCl, 0.05 mM Na2EDTA	100% D2O	0.1 M NaCl	7.0	1 atm	298
6	2D NOESY	0.7 mM modified duplex, 10 mM phosphate buffer, 0.1 M NaCl, 0.05 mM Na2EDTA	90% H2O/10% D2O	0.1 M NaCl	7.0	1 atm	278

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE III	800
2	Bruker	AVANCE III	600
3	Bruker	AVANCE III	500

NMR Refinement
Method	Details	Software
simulated annealing restrained molecular dynamics		X-PLOR

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	12
Conformers Submitted Total Number	8
Representative Model	1 (closest to the average structure)

Additional NMR Experimental Information
Details	This structure was determined using standard 2D homonuclear techniques

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	refinement	X-PLOR	3.1	Brunger
2	processing	Felix	95.0	Accelrys Software Inc.
3	iterative matrix relaxation	MARDIGRAS	5.2	Borgias
4	iterative matrix relaxation	CORMA	5.2	Keepers