2MB4

Solution structure of a stacked dimeric G-quadruplex formed by a segment of the human CEB1 minisatellite

SOLUTION NMR

---

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(*AP*GP*GP*GP*GP*GP*GP*AP*GP*GP*GP*AP*GP*GP*GP*TP*GP*G)-3'), 20 mM potassium phosphate, 70 mM potassium chloride, 10 uM DSS	90% H2O/10% D2O	100	7	ambient	298
2	2D 1H-1H NOESY	1.5 mM DNA (5'-D(*AP*GP*GP*GP*GP*GP*GP*AP*GP*GP*GP*AP*GP*GP*GP*TP*GP*G)-3'), 20 mM potassium phosphate, 70 mM potassium chloride, 10 uM DSS	100% D2O	100	7	ambient	298
3	2D 1H-1H TOCSY	1.5 mM DNA (5'-D(*AP*GP*GP*GP*GP*GP*GP*AP*GP*GP*GP*AP*GP*GP*GP*TP*GP*G)-3'), 20 mM potassium phosphate, 70 mM potassium chloride, 10 uM DSS	100% D2O	100	7	ambient	298
4	2D 1H-13C HSQC aromatic	1.5 mM DNA (5'-D(*AP*GP*GP*GP*GP*GP*GP*AP*GP*GP*GP*AP*GP*GP*GP*TP*GP*G)-3'), 20 mM potassium phosphate, 70 mM potassium chloride, 10 uM DSS	90% H2O/10% D2O	100	7	ambient	298
5	2D 1H-1H ROESY	1.5 mM DNA (5'-D(*AP*GP*GP*GP*GP*GP*GP*AP*GP*GP*GP*AP*GP*GP*GP*TP*GP*G)-3'), 20 mM potassium phosphate, 70 mM potassium chloride, 10 uM DSS	90% H2O/10% D2O	100	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, molecular dynamics		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	Amber		Case, Darden, Cheatham, III, Simmerling, Wang, Duke, Luo and Kollman
3	refinement	X-PLOR NIH		Schwieters, Kuszewski, Tjandra and Clore