2JYK

NMR Structure of a 21 bp DNA duplex preferentially cleaved by Human Topoisomerase II

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D 1H-1H NOESY	46mM sodium phosphate; 1mM EDTA; 1.5mM Strand1; 1.5mM Strand2; 90% H2O/10% D2O	90% H2O/10% D2O	0.1	7.00	1 atm	303
2	2D 1H-1H NOESY	46mM sodium phosphate; 1mM EDTA; 1.5mM Strand1; 1.5mM Strand2; 100% D2O	100% D2O	0.1	7.00	1 atm	303
3	2D DQF-COSY	46mM sodium phosphate; 1mM EDTA; 1.5mM Strand1; 1.5mM Strand2; 100% D2O	100% D2O	0.1	7.00	1 atm	303
4	2D 1H-1H TOCSY	46mM sodium phosphate; 1mM EDTA; 1.5mM Strand1; 1.5mM Strand2; 100% D2O	100% D2O	0.1	7.00	1 atm	303
5	2D 1H-13C HSQC	46mM sodium phosphate; 1mM EDTA; 1.5mM Strand1; 1.5mM Strand2; 100% D2O	100% D2O	0.1	7.00	1 atm	303
6	2D 1H-31P HETCOR	46mM sodium phosphate; 1mM EDTA; 1.5mM Strand1; 1.5mM Strand2; 100% D2O	100% D2O	0.1	7.00	1 atm	303

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE	500

NMR Refinement
Method	Details	Software
SIMULATED ANNEALING, MOLECULAR DYNAMICS	THE STRUCTURE IS BASED ON A TOTAL OF 670 NOE, 102 HYDROGEN BOND, AND 286 DIHEDRAL RESTRAINTS	X-PLOR NIH

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	refinement	X-PLOR NIH	2.16	Schwieters, Kuszewski, Tjandra and Clore
2	data analysis	MORASS	2.51	Luxon

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 R01GM133198.