2MFT

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

SOLUTION NMR

---

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D 1H-1H TOCSY	2 mM 5'-D(*GP*GP*GP*TP*TP*TP*TP*GP*GP*GP*TP*GP*GP*GP*TP*TP*TP*TP*GP*GP*G)-3', 20 mM sodium phosphate	100% D2O	20	7.8	ambient	293
2	2D 1H-1H COSY	2 mM 5'-D(*GP*GP*GP*TP*TP*TP*TP*GP*GP*GP*TP*GP*GP*GP*TP*TP*TP*TP*GP*GP*G)-3', 20 mM sodium phosphate	100% D2O	20	7.8	ambient	293
3	2D 1H-1H NOESY	2 mM 5'-D(*GP*GP*GP*TP*TP*TP*TP*GP*GP*GP*TP*GP*GP*GP*TP*TP*TP*TP*GP*GP*G)-3', 20 mM sodium phosphate	100% D2O	20	7.8	ambient	293
4	2D 1H-1H NOESY	2 mM 5'-D(*GP*GP*GP*TP*TP*TP*TP*GP*GP*GP*TP*GP*GP*GP*TP*TP*TP*TP*GP*GP*G)-3', 20 mM sodium phosphate	93% H2O/7% D2O	20	7.8	ambient	278
5	2D 1H-31P HSQC	2 mM 5'-D(*GP*GP*GP*TP*TP*TP*TP*GP*GP*GP*TP*GP*GP*GP*TP*TP*TP*TP*GP*GP*G)-3', 20 mM sodium phosphate	100% D2O	20	7.8	ambient	293

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

NMR Refinement
Method	Details	Software
DGSA-distance geometry simulated annealing, molecular dynamics		Felix

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	88
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	collection	VnmrJ		Varian
3	chemical shift assignment	Sparky		Goddard
4	data analysis	Sparky		Goddard
5	structure solution	X-PLOR NIH		Schwieters, Kuszewski, Tjandra and Clore
6	refinement	X-PLOR NIH		Schwieters, Kuszewski, Tjandra and Clore
7	data analysis	MOLMOL		Koradi, Billeter and Wuthrich