1IEY

SOLUTION STRUCTURE OF THE DNA DUPLEX D(CCACCGGAAC).(GTTCCGGTGG) WITH A CHIRAL ALKYL-PHOSPHONATE MOIETY (DIAESTEREOISOMER R)

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D NOESY	2mM duplex; 10mM phosphate, 100mM NaCl	90% H20, 10% D2O		7.0	1 atm	278
2	2D NOESY	2mM duplex; 10mM phosphate, 100mM NaCl	D2O		7.0	1 atm	298
3	DQF-COSY	2mM duplex; 10mM phosphate, 100mM NaCl	D2O		7.0	1 atm	298

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

NMR Refinement
Method	Details	Software
simulated, annealing molecular dynamics, matrix relaxation	the structures are based on a total of 280 NOE-derived distance constraints obtained from a complete relaxation matrix refinement. The structures were calculated by using restrained molecular dynamics with explicit solvent, and applying the particle mesh Ewald method.	MARDIGRAS

NMR Ensemble Information
Conformer Selection Criteria	all calculated structures submitted
Conformers Calculated Total Number	10
Conformers Submitted Total Number	10

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	iterative matrix relaxation	MARDIGRAS	5.2	James, T.L.
2	refinement	Amber	5.0	Kollman, P.A.
3	collection	XwinNMR	1.3	Bruker

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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.