1OZ8

Intramolecular higher-order packing of parallel quadruplexes comprising a G:G:G:G tetrad and a G(:A):G(:A):G(:A):G heptad of GGA triplet repeat DNA

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D NOESY	1mM DNA; 10mM sodium phosphate buffer; 30mM KCl	95% H2O/5% D2O		6.5	ambient	275
2	2D NOESY	1mM DNA; 10mM sodium phosphate buffer; 30mM KCl	100% D2O		6.5	ambient	298
3	2D TOCSY	1mM DNA; 10mM sodium phosphate buffer; 30mM KCl	100% D2O		6.5	ambient	298
4	DQF-COSY	1mM DNA; 10mM sodium phosphate buffer; 30mM KCl	100% D2O		6.5	ambient	298

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	DRX	800
2	Bruker	DRX	600

NMR Refinement
Method	Details	Software
simulated annealing		X-PLOR

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	100
Conformers Submitted Total Number	20
Representative Model	1 (lowest energy)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	structure solution	X-PLOR	3.851	Brunger
2	refinement	X-PLOR	3.851

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.