1IE2

Solution Structure of an In Vitro Selected RNA which is Sequence Specifically Recognized by RBD12 of Hamster Nucleolin.sNRE (anti)

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D NOESY	1 mM sNRE 2-5 mM added Na+	10% H2O 90% D2O	low (from pH)	6	ambient	278
2	2D NOESY	1 mM sNRE 2-5 mM added Na+	99.99% D2O	low (from pH)	6	ambient	303
3	H/N HMQC	1 mM U-13C/15N sNRE 2-5 mM added Na+	10% H2O 90% D2O	low (from pH)	6	ambient	278
4	DQF-COSY	1 mM sNRE 2-5 mM added Na+	99.99% D2O	low (from pH)	6	ambient	303
5	3D_13C-separated_NOESY	1 mM U-13C/15N sNRE 2-5 mM added Na+	99.99% D2O	low (from pH)	6	ambient	303
6	CT-H/C-HSQC	1 mM U-13C/15N sNRE 2-5 mM added Na+	99.99% D2O	low (from pH)	6	ambient	303

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

NMR Refinement
Method	Details	Software
Simulated annealing from randomized templates using xplor3.8.	This structure has the G in the loop constrained to anti.	XwinNMR

NMR Ensemble Information
Conformer Selection Criteria	all calculated structures submitted
Conformers Calculated Total Number	21
Conformers Submitted Total Number	21
Representative Model	21 (lowest energy)

Additional NMR Experimental Information
Details	We also use U/C, A, and G only labeled samples. Dieckmann, T, Feigon, J, 9 (1997)259-272.

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	XwinNMR	2.6	Bruker
2	processing	X-PLOR	2.6	Bruker
3	data analysis	Felix	97.0	MSI
4	structure solution	X-PLOR	3.8	Brunger and Nilgiles
5	refinement	X-PLOR	3.8	Brunger and Nilgiles

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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.