1C4L

SOLUTION STRUCTURE OF AN RNA DUPLEX INCLUDING A C-U BASE-PAIR

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D_1H_NOESY	R[CGACUCAGG]_R[CCUG(15N4)CGUCG] (AMINO-NITROGEN OF CYTIDINE IS POINT-LABELED (> 95%))		50mM(NACL)	7.0	1 atm	300
2	2D_1H_NOESY	R[CGACUCAGG]_R[CCUG(15N4)CGUCG] (AMINO-NITROGEN OF CYTIDINE IS POINT-LABELED (> 95%))		50mM(NACL)	7.0	1 atm	300
3	2D_1H_NOESY	R[CGACUCAGG]_R[CCUG(15N4)CGUCG] (AMINO-NITROGEN OF CYTIDINE IS POINT-LABELED (> 95%))		50mM(NACL)	7.0	1 atm	278
4	2D_PCOSY	R[CGACUCAGG]_R[CCUG(15N4)CGUCG] (AMINO-NITROGEN OF CYTIDINE IS POINT-LABELED (> 95%))		50mM(NACL)	7.0	1 atm	300

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

NMR Refinement
Method	Details	Software
simulated annealing	DISTANCE CONSTRAINTS (NOE 433, HYDROGEN BOND (BASE-PAIR) 54), DIHEDRAL ANGLE CONSTRAINTS 45	X-PLOR

NMR Ensemble Information
Conformer Selection Criteria	SUMMATION OF TOTAL ENERGY (COVALENT GEOMETRY, NON-BOND ENERGY, DISTANCE AND DIHEDRAL ANGLE CONSTRAINTS)
Conformers Calculated Total Number	50
Conformers Submitted Total Number	1
Representative Model	1 (minimized average structure)

Additional NMR Experimental Information
Details	THIS STRUCTURE WAS DETERMINED USING STANDARD 2D HOMONUCLEAR TECHNIQUES

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	refinement	X-PLOR	3.851	BRUNGER
2	refinement	X-PLOR	3.8.1	BRUNGER
3	structure solution	X-PLOR	3.851	BRUNGER
4	structure solution	X-PLOR	3.8.1	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.