2MAY

Structure of a G-quadruplex containing a single LNA modification

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	1.5 mM DNA (5'-D(*TP*TP*GP*LGP*GP*TP*TP*AP*GP*GP*GP*TP*TP*AP*GP*GP*GP*TP*TP*AP*GP*GP*GP*A)-3'), 20 uM DSS, 20 mM potassium phosphate	90% H2O/10% D2O	30	7	ambient	298
2	2D 1H-1H NOESY	1.5 mM DNA (5'-D(*TP*TP*GP*LGP*GP*TP*TP*AP*GP*GP*GP*TP*TP*AP*GP*GP*GP*TP*TP*AP*GP*GP*GP*A)-3'), 20 uM DSS, 20 mM potassium phosphate	100% D2O	30	7	ambient	298
3	2D 1H-13C HSQC	1.5 mM DNA (5'-D(*TP*TP*GP*LGP*GP*TP*TP*AP*GP*GP*GP*TP*TP*AP*GP*GP*GP*TP*TP*AP*GP*GP*GP*A)-3'), 20 uM DSS, 20 mM potassium phosphate	90% H2O/10% D2O	30	7	ambient	298
4	2D 1H-1H TOCSY	1.5 mM DNA (5'-D(*TP*TP*GP*LGP*GP*TP*TP*AP*GP*GP*GP*TP*TP*AP*GP*GP*GP*TP*TP*AP*GP*GP*GP*A)-3'), 20 uM DSS, 20 mM potassium phosphate	100% D2O	30	7	ambient	298
5	2D 1H-1H COSY	1.5 mM DNA (5'-D(*TP*TP*GP*LGP*GP*TP*TP*AP*GP*GP*GP*TP*TP*AP*GP*GP*GP*TP*TP*AP*GP*GP*GP*A)-3'), 20 uM DSS, 20 mM potassium phosphate	100% D2O	30	7	ambient	298

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE	600
2	Bruker	AVANCE	700

NMR Refinement
Method	Details	Software
DGSA-distance geometry simulated annealing		X-PLOR NIH

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	100
Conformers Submitted Total Number	10
Representative Model	1 (lowest energy)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	structure solution	X-PLOR NIH		Schwieters, Kuszewski, Tjandra and Clore
2	refinement	X-PLOR NIH		Schwieters, Kuszewski, Tjandra and Clore