Experiment: 7KUC

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D_NOESY	1 mM RNA	100% D2O	50MM KCL mM	5.6	ambient	311	Bruker Ascend800 800
2	1H-13C_HMQC	1 mM [U-13C] RNA	100% D2O	50MM KCL mM	5.6	ambient	311	Bruker UltraShield700Plus 700
3	2D_NOESY	1 mM RNA	10%D2O 90%H2O	50MM KCL mM	5.6	ambient	278	Bruker Ascend800 800

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	Ascend800	800
2	Bruker	UltraShield700Plus	700

NMR Refinement
Method	Details	Software
simulated annealing	First round of structure calculation was conducted with distance and dihedral angle restraints only. Second round was performed with electrostatics using both high temperature annealing and low temperature annealing.	X-PLOR NIH

NMR Ensemble Information
Conformer Selection Criteria	10 structures for lowest energy
Conformers Calculated Total Number	100
Conformers Submitted Total Number	10
Representative Model	1 (lowest energy)

Computation: NMR Software
#	Classification	Version	Software Name	Author
4	processing	NMRDraw		Delaglio, Grzesiek, Vuister, Zhu, Pfeifer and Bax
1	chemical shift assignment	NMRViewJ		Bruce A. Johnson
2	structure calculation	CYANA		Guntert, Mumenthaler and Wuthrich
3	refinement	X-PLOR NIH	3.1	Schwieters, Kuszewski, Tjandra and Clore

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.