Experiment: 1XWU

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D NOESY	0.5mM RNA; 20mM phosphate buffer NA, 50mM NaCl; 95% H2O, 5% D2O	95% H2O/5% D2O	70 mM	6.5	ambient	283
2	2D NOESY	0.5mM RNA; 20mM phosphate buffer NA, 50mM NaCl; 100% D2O	100% D2O	70 mM	6.5	ambient	283
3	2D TOCSY	0.5mM RNA; 20mM phosphate buffer NA, 50mM NaCl; 100% D2O	100% D2O	70 mM	6.5	ambient	283
4	DQF-COSY	0.5mM RNA; 20mM phosphate buffer NA, 50mM NaCl; 100% D2O	100% D2O	70 mM	6.5	ambient	283
5	HP-COSY	0.5mM RNA; 20mM phosphate buffer NA, 50mM NaCl; 100% D2O	100% D2O	70 mM	6.5	ambient	283
6	HCP	1mM RNA U-15N,13C; 20mM phosphate buffer NA, 50mM NaCl; 100% D2O	100% D2O	70 mM	6.5	ambient	283

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	DRX	500
2	Bruker	DRX	600

NMR Refinement
Method	Details	Software
simulated annealing	The structure is based on a total of 292 restraints, 228 are NOE-derived distance constraints, 46 dihedral angle restraints, 13 distance restraints from hydrogen bonds, 5 base planarity restraints.	XwinNMR

NMR Ensemble Information
Conformer Selection Criteria
Conformers Calculated Total Number
Conformers Submitted Total Number	1
Representative Model	(minimized average structure)

Additional NMR Experimental Information
Details	The structure was determined using triple-resonance NMR spectroscopy.

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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.

1XWU | pdb_00001xwu