1B4Y

STRUCTURE AND MECHANISM OF FORMATION OF THE H-Y5 ISOMER OF AN INTRAMOLECULAR DNA TRIPLE HELIX.

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	NOESY	H2O/D2O		100 mM	4.5		298
2	PE-COSY	H2O/D2O		100 mM	4.5		298
3	TOCSY	H2O/D2O		100 mM	4.5		298
4	31P-1H	H2O/D2O		100 mM	4.5		298
5	TOCSY-NOESY	H2O/D2O		100 mM	4.5		298

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AMX 600	500
2	Varian	UNITYPLUS	600
3	Varian	UNITYPLUS	750

NMR Refinement
Method	Details	Software
TORSION ANGLE DYNAMICS, SIMULATED ANNEALING	STRUCTURES WERE OBTAINED BY TORSION ANGLE DYNAMICS, AND SUBSEQUENTLY REFINED BY MEANS OF SIMULATED ANNEALING.	X-PLOR

NMR Ensemble Information
Conformer Selection Criteria	LOW ENERGIES
Conformers Calculated Total Number	30
Conformers Submitted Total Number	12
Representative Model	10 (n/a)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	refinement	X-PLOR	3.815	BRUNGER
2	structure solution	XPLOR

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.