2IHX

Solution Structure of the Rous Sarcoma Virus Nucleocapsid Protein:uPsi RNA Packaging Signal Complex

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D NOESY	1.0 mM unlabeled nucleocapsid protein, 1.0 mM A-selectively-protonated uPsi RNA, 5 mM Tris-d11-HCl buffer, pH 7.0, 5mM NaCl, 0.1 mM ZnCl2	100% D2O	5 mM NaCl, 0.1 mM ZnCl2	7.0	ambient	308
2	2D NOESY	1.2 mM unlabeled nucleocapsid protein, 1.2 mM G-selectively-protonated uPsi RNA, 5 mM Tris-d11-HCl buffer, pH 7.0, 5mM NaCl, 0.1 mM ZnCl2	100% D2O	5 mM NaCl, 0.1 mM ZnCl2	7.0	ambient	308
3	2D NOESY	0.8 mM unlabeled nucleocapsid protein, 0.8 mM U-selectively-protonated uPsi RNA, 5 mM Tris-d11-HCl buffer, pH 7.0, 5mM NaCl, 0.1 mM ZnCl2	100% D2O	5 mM NaCl, 0.1 mM ZnCl2	7.0	ambient	308
4	2D NOESY	0.8 mM unlabeled nucleocapsid protein, 0.8 mM C-selectively-protonated uPsi RNA, 5 mM Tris-d11-HCl buffer, pH 7.0, 5mM NaCl, 0.1 mM ZnCl2	100% D2O	5 mM NaCl, 0.1 mM ZnCl2	7.0	ambient	308
5	2D NOESY	1.2 mM unlabeled nucleocapsid protein, 1.2 mM unlabeled uPsi RNA, 5 mM Tris-d11-HCl buffer, pH 7.0, 5mM NaCl, 0.1 mM ZnCl2	100% D2O	5 mM NaCl, 0.1 mM ZnCl2	7.0	ambient	308
6	3D_13C-separated_NOESY	1.2 mM 15N, 13C-labeled nucleocapsid protein, 1.2 mM unlabeled uPsi RNA, 5 mM Tris-d11-HCl buffer, pH 7.0; 5mM NaCl, 0.1 mM ZnCl2	100% D2O	5 mM NaCl, 0.1 mM ZnCl2	7.0	ambient	308

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	DRX	800
2	Bruker	DMX	600

NMR Refinement
Method	Details	Software
1H-1H distance restraints, Hydrogen-bond restraints, Torsion angle restraints, Inter-phosphate restraints	The structures are based on a total of 1697 restraints. 680 are NOE-derived distance restraints, 608 are Hydrogen-bond restraints, 239 are torsion angle restraints and 170 are inter-phosphate restraints.	XwinNMR

NMR Ensemble Information
Conformer Selection Criteria	structures with the least restraint violations
Conformers Calculated Total Number	800
Conformers Submitted Total Number	20
Representative Model	1 (fewest violations)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	XwinNMR		BRUKER
2	processing	NMRPipe		Delaglio, F., Grzesiek. S., Vuister, G.W., Zhu, G., Pfeifer, J., & Bax, A.
3	data analysis	NMRView	5	Johnson, B.A., Blevins, R.A.
4	refinement	CYANA	2.1	Guntert, P., Mumenthaler, C. & Wuthrich, K.