1TQR

NMR Structure of DNA 17-mer GGAAAATCTCTAGCAGT corresponding to the extremity of the U5 LTR of the HIV-1 genome

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D_NOESY	phosphte buffer PH6.7
2	2D_TOCSY	phosphte buffer PH6.7
3	DQF-COSY	phosphte buffer PH6.7
4	2D_HSQC_1H-13C	phosphte buffer PH6.7

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

NMR Refinement
Method	Details	Software
torsion angle dynamics including classical and RDC constraints	in the first stage the classical constraints were used with TAD at high temperature, in a second stage the RDC were gradually added with TAD at low temperature (200K)	CNS

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	50
Conformers Submitted Total Number	9
Representative Model	1 (lowest energy)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	refinement	CNS	0.9a

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.