1IE1

NMR Solution Structure of an In Vitro Selected RNA which is Sequence Specifically Recognized by Hamster Nucleolin RBD12.

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 Na+ added for pH	10% D2O 90% H2O, pH=6.0	low (2-5 mM added Na+)	6	ambient	278
2	H-N HMQC	0.5 mM U-13C/15N sNRE 2-5 mM Na+ added for pH	10 D2O 90% H2O	low (2-5 mM added Na+)	6	ambient	278
3	2D NOESY	1 mM sNRE 2-5 mM Na+ added for pH	99.99% D2O	low (2-5 mM added Na+)	6	ambient	303
4	3D_13C-separated_NOESY	0.5 mM U-13C/15N sNRE 2-5 mM Na+ added for pH	99.99% D2O	low (2-5 mM added Na+)	6	ambient	303
5	HCCH TOCSY	0.5 mM U-13C/15N sNRE 2-5 mM Na+ added for pH	99.99% D2O	low (2-5 mM added Na+)	6	ambient	303
6	DQF-COSY	1 mM sNRE 2-5 mM Na+ added for pH	99.99% D2O	low (2-5 mM added Na+)	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 starting from randomized templates. Base planarity restraints were added.		XwinNMR

NMR Ensemble Information
Conformer Selection Criteria	all calculated structures submitted
Conformers Calculated Total Number	18
Conformers Submitted Total Number	18
Representative Model	18 (lowest energy)

Additional NMR Experimental Information
Details	RNA was also assigned using U/C, A, and, G specifically labeled samples. Dieckmann, T., Feigon, J. J. Biomol. NMR 9 (1997) 259-272.

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	XwinNMR	2.6	Bruker
2	processing	XwinNMR	2.6	Bruker
3	data analysis	Felix	97.0	Molecular Simulations Inc.
4	structure solution	X-PLOR	3.8	Brunger & Nilges
5	refinement	X-PLOR	3.8	Brunger & Nilges