1XAV

Major G-quadruplex structure formed in human c-MYC promoter, a monomeric parallel-stranded quadruplex

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D NOESY	0.2-3mM DNA oligonucleotides, 25mM potassium-phosphate,70mM potassium-chloride,pH7.0 buffer	10% D2O/90% H2O	25mM potassium-phosphate,70mM potassium-chloride	7.0	ambient	298
2	2D NOESY	0.2-3mM DNA oligonucleotides, 25mM potassium-phosphate,70mM potassium-chloride,pH7.0 buffer	99.96% D2O	25mM potassium-phosphate,70mM potassium-chloride	7.0	ambient	298
3	2D TOCSY	0.2-3mM DNA oligonucleotides, 25mM potassium-phosphate,70mM potassium-chloride,pH7.0 buffer	99.96% D2O	25mM potassium-phosphate,70mM potassium-chloride	7.0	ambient	298
4	DQF-COSY	0.2-3mM DNA oligonucleotides, 25mM potassium-phosphate,70mM potassium-chloride,pH7.0 buffer	99.96% D2O	25mM potassium-phosphate,70mM potassium-chloride	7.0	ambient	298

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

NMR Refinement
Method	Details	Software
molecular dynamics		XwinNMR

NMR Ensemble Information
Conformer Selection Criteria	structures with the least restraint violations
Conformers Calculated Total Number	200
Conformers Submitted Total Number	20
Representative Model	1 (fewest violations)

Additional NMR Experimental Information
Details	Constraints for structure calculations were collected from standard homonuclear NMR experiments. Site-specific imino-assignments were obtained from 1D HMQC with presaturation. 2D NOESY in water used jump-and-return solvent suppression. The average RMSD is 0.880531.

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	XwinNMR	3.5
2	data analysis	Sparky	3.1	Goddard,T.D., Kneller,D.G.
3	refinement	Insight II	2000L

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.