8JFQ

Structure of the Major G-Quadruplex in the Human EGFR Oncogene Promoter Adopts a Unique Folding Topology with a Distinctive Snap-back Loop

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	1.3 mM no Pu26m1T	90% H2O/10% D2O	25 mM	7.0	1 atm	278	Bruker AVANCE III 600
2	2D 1H-1H NOESY	1.3 mM no Pu26m1T	90% H2O/10% D2O	25 mM	7.0	1 atm	288	Bruker AVANCE III 600
3	2D 1H-1H NOESY	1.3 mM no Pu26m1T	90% H2O/10% D2O	25 mM	7.0	1 atm	298	Bruker AVANCE III 600
4	2D 1H-1H NOESY	1.3 mM no Pu26m1T	90% H2O/10% D2O	25 mM	7.0	1 atm	308	Bruker AVANCE III 600
5	2D 1H-13C HSQC	1.3 mM no Pu26m1T	90% H2O/10% D2O	25 mM	7.0	1 atm	298	Bruker AVANCE III 600
6	2D 1H-13C HSQC	1.3 mM no Pu26m1T	90% H2O/10% D2O	25 mM	7.0	1 atm	308	Bruker AVANCE III 600
7	2D DQF-COSY	1.3 mM no Pu26m1T	90% H2O/10% D2O	25 mM	7.0	1 atm	298	Bruker AVANCE III 600

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE III	600

NMR Refinement
Method	Details	Software
simulated annealing		TopSpin
molecular dynamics		NMRFAM-SPARKY

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	data analysis	TopSpin		Bruker Biospin
2	chemical shift assignment	NMRFAM-SPARKY		Lee W, Tonelli M, Markley JL
3	structure calculation	X-PLOR NIH		Schwieters, Kuszewski, Tjandra and Clore
4	refinement	Amber		Case, Darden, Cheatham III, Simmerling, Wang, Duke, Luo, ... and Kollman