2M6V

Solution NMR structure of the d(GGGTTGGGTTTTGGGTGGG) quadruplex in sodium conditions

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	5 mM DNA (5'-D(*GP*GP*GP*TP*TP*GP*GP*GP*TP*TP*TP*TP*GP*GP*GP*TP*GP*GP*G)-3'), 20 mM sodium phosphate	93% H2O/7% D2O	25	7.8	ambient atm	278
2	2D 1H-1H NOESY	5 mM DNA (5'-D(*GP*GP*GP*TP*TP*GP*GP*GP*TP*TP*TP*TP*GP*GP*GP*TP*GP*GP*G)-3'), 20 mM sodium phosphate	100% D2O	25	7.8	ambient atm	293
3	2D 1H-1H TOCSY	5 mM DNA (5'-D(*GP*GP*GP*TP*TP*GP*GP*GP*TP*TP*TP*TP*GP*GP*GP*TP*GP*GP*G)-3'), 20 mM sodium phosphate	100% D2O	25	7.8	ambient atm	293
4	2D DQF-COSY	5 mM DNA (5'-D(*GP*GP*GP*TP*TP*GP*GP*GP*TP*TP*TP*TP*GP*GP*GP*TP*GP*GP*G)-3'), 20 mM sodium phosphate	100% D2O	25	7.8	ambient atm	293
5	2D [1H-13C] H1(C5)H8 JR HMBC	5 mM DNA (5'-D(*GP*GP*GP*TP*TP*GP*GP*GP*TP*TP*TP*TP*GP*GP*GP*TP*GP*GP*G)-3'), 20 mM sodium phosphate	93% H2O/7% D2O	25	7.8	ambient atm	278
6	2D [1H-31P]-HSQC	5 mM DNA (5'-D(*GP*GP*GP*TP*TP*GP*GP*GP*TP*TP*TP*TP*GP*GP*GP*TP*GP*GP*G)-3'), 20 mM sodium phosphate	100% D2O	25	7.8	ambient atm	293

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Varian	VNMRS 500	500

NMR Refinement
Method	Details	Software
simulated annealing, molecular dynamics		Felix

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	processing	Felix		Accelrys Software Inc.
2	chemical shift assignment	Sparky		Goddard
3	data analysis	Sparky		Goddard
4	structure solution	X-PLOR		Brunger
5	refinement	X-PLOR		Brunger
6	structure solution	X-PLOR NIH		Schwieters, Kuszewski, Tjandra and Clore
7	refinement	X-PLOR NIH		Schwieters, Kuszewski, Tjandra and Clore
8	data analysis	MOLMOL		Koradi, Billeter and Wuthrich
9	collection	VnmrJ		Varian