1CS2

NMR STRUCTURES OF B-DNA D(CTACTGCTTTAG).D(CTAAAGCAGTAG)

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D NOESY	4 MM DNA DUPLEX, 0.4 ML POTASSIUM DIHYDROGEN PHOSPHATE DISODIUM HYDROGEM PHOSPHATE BUFFER; 100% D2O		0.1	6.9	AMBIENT	308
2	P-COSY	4 MM DNA DUPLEX, 0.4 ML POTASSIUM DIHYDROGEN PHOSPHATE DISODIUM HYDROGEM PHOSPHATE BUFFER; 100% D2O		0.1	6.9	AMBIENT	308
3	2D_31P/1H HETEROTOCSY	4 MM DNA DUPLEX, 0.4 ML POTASSIUM DIHYDROGEN PHOSPHATE DISODIUM HYDROGEM PHOSPHATE BUFFER; 100% D2O		0.1	6.9	AMBIENT	308
4	2D NOESY	4 MM DNA DUPLEX, 0.4 ML POTASSIUM DIHYDROGEN PHOSPHATE DISODIUM HYDROGEM PHOSPHATE BUFFER; 90% H2O, 10%D2O		0.1	6.9	AMBIENT	283

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AMX	500
2	Bruker	AMX	500

NMR Refinement
Method	Details	Software
MOLECULAR DYNAMICS, MATRIX RELAXATION	MODEL 1: AVERAGE OF THE EIGHT STRUCTURES OBTAINED WITH JUMNA AND AMBER94 AS FORCE FIELD. MODEL 2: AVERAGE OF THE EIGHT STRUCTURES OBTAINED WITH JUMNA AND FLEX AS FORCE FIELD. MODEL 3: AVERAGE OF THE SIX STRUCTURES OBTAINED WITH X- PLOR.	JUMNA

NMR Ensemble Information
Conformer Selection Criteria	back calculated data agree with experimental NOESY spectrum
Conformers Calculated Total Number	22
Conformers Submitted Total Number	3

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	structure calculation	JUMNA	10.1	LAVERY
2	structure calculation	X-PLOR	3.1	BRUNGER
3	data analysis	Felix	97	MSI
4	collection	XwinNMR	2.0	BRUKER
5	refinement	X-PLOR	3.1	BRUNGER

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.