2LEE

Unique structural features of interconverting monomeric and dimeric G-quadruplexes adopted by a sequence from intron of N-myc gene

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	0.4-6.6 mM DNA (5'-D(*TP*AP*GP*GP*GP*CP*GP*GP*GP*AP*GP*GP*GP*AP*GP*GP*GP*AP*A)-3')	90% H2O/10% D2O	120	6.5	ambient	298.15
2	2D 1H-15N HSQC	0.4-6.6 mM DNA (5'-D(*TP*AP*GP*GP*GP*CP*GP*GP*GP*AP*GP*GP*GP*AP*GP*GP*GP*AP*A)-3')	90% H2O/10% D2O	120	6.5	ambient	298.15
3	2D 31P-1H COSY	0.4-6.6 mM DNA (5'-D(*TP*AP*GP*GP*GP*CP*GP*GP*GP*AP*GP*GP*GP*AP*GP*GP*GP*AP*A)-3')	90% H2O/10% D2O	120	6.5	ambient	298.15
4	2D 1H-1H DQF COSY	0.4-6.6 mM DNA (5'-D(*TP*AP*GP*GP*GP*CP*GP*GP*GP*AP*GP*GP*GP*AP*GP*GP*GP*AP*A)-3')	90% H2O/10% D2O	120	6.5	ambient	298.15
5	2D 1H-15N HMQC	0.4-6.6 mM DNA (5'-D(*TP*AP*GP*GP*GP*CP*GP*GP*GP*AP*GP*GP*GP*AP*GP*GP*GP*AP*A)-3')	90% H2O/10% D2O	120	6.5	ambient	298.15

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Varian	VNMRS	800
2	Varian	VNMRS	600

NMR Refinement
Method	Details	Software
simulated annealing		Amber

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	50
Conformers Submitted Total Number	10
Representative Model	1 (lowest energy)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	structure solution	Amber	9	Case, Darden, Cheatham, III, Simmerling, Wang, Duke, Luo, and Kollm
2	refinement	Amber		Case, Darden, Cheatham, III, Simmerling, Wang, Duke, Luo, and Kollm