5YEY

The structure of a chair-type G-quadruplex of the human telomeric variant in K+ solution

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	2.5 mM DNA (5'-D(*GP*GP*GP*TP*TP*AP*GP*GP*GP*TP*TP*AP*GP*GP*GP*TP*TP*TP*GP*GP*G)-3')	90% H2O/10% D2O	90 mM	7	ambient Pa	284	Varian INOVA 800
2	2D 1H-1H NOESY	2.5 mM DNA (5'-D(*GP*GP*GP*TP*TP*AP*GP*GP*GP*TP*TP*AP*GP*GP*GP*TP*TP*TP*GP*GP*G)-3')	100% D2O	90 mM	7	ambient Pa	284	Varian INOVA 800
3	2D 1H-1H TOCSY	2.5 mM DNA (5'-D(*GP*GP*GP*TP*TP*AP*GP*GP*GP*TP*TP*AP*GP*GP*GP*TP*TP*TP*GP*GP*G)-3')	100% D2O	90 mM	7	ambient Pa	284	Varian INOVA 500
4	2D 1H-1H COSY	2.5 mM DNA (5'-D(*GP*GP*GP*TP*TP*AP*GP*GP*GP*TP*TP*AP*GP*GP*GP*TP*TP*TP*GP*GP*G)-3')	100% D2O	90 mM	7	ambient Pa	284	Varian INOVA 800
5	2D 1H-13C HSQC	2.5 mM DNA (5'-D(*GP*GP*GP*TP*TP*AP*GP*GP*GP*TP*TP*AP*GP*GP*GP*TP*TP*TP*GP*GP*G)-3')	100% D2O	90 mM	7	ambient Pa	284	Varian INOVA 800

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Varian	INOVA	800
2	Varian	INOVA	500

NMR Refinement
Method	Details	Software
simulated annealing	the structures are based on a total of 304 distance constriants	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	collection	VNMR		Varian
2	chemical shift calculation	NMRPipe		Delaglio, Grzesiek, Vuister, Zhu, Pfeifer and Bax
3	chemical shift assignment	Sparky		Goddard
4	peak picking	Sparky		Goddard
5	data analysis	Sparky		Goddard
6	structure calculation	X-PLOR NIH		Schwieters, Kuszewski, Tjandra and Clore
7	refinement	X-PLOR NIH		Schwieters, Kuszewski, Tjandra and Clore