1RKJ

Solution structure of the complex formed by the two N-terminal RNA-binding domains of nucleolin and a pre-rRNA target

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	3D_13C-separated_NOESY	U-(15N,13C) nucleolin RBD12 in a 1 mM 1:1 complex with unlabeled b2NRE, 100% D2O	50 mM phosphate buffer, 100% D2O	150 mM KCl	7.0	ambient	310
2	3D_15N-separated_NOESY	U-(15N) nucleolin RBD12 in a 1 mM 1:1 complex with unlabeled b2NRE, 95% H2O, 5% D2O	50 mM phosphate buffer, 95% H2O, 5% D2O	150 mM KCl	7.0	ambient	310
3	2D_13C-filtered_NOESY	U-(15N,13C) nucleolin RBD12 in a 1 mM 1:1 complex with unlabeled b2NRE, 100% D2O	50 mM phosphate buffer, 100% D2O	150 mM KCl	7.0	ambient	310
4	2D_13C-filtered_NOESY	U-(15N,13C) nucleolin RBD12 in a 1 mM 1:1 complex with unlabeled b2NRE, 100% D2O	50 mM phosphate buffer, 100% D2O	50 mM KCl	7.0	ambient	310
5	2D_13C-filtered_NOESY	U-(15N,13C) nucleolin RBD12 in a 1 mM 1:1 complex with unlabeled b2NRE, 100% D2O	50 mM phosphate buffer, 100% D2O	200 mM KCl	7.0	ambient	310
6	T1-coupled HSQC	U-(15N) nucleolin RBD12 in a 1 mM 1:1 complex with unlabeled b2NRE, 95% H2O, 5% D2O	50 mM phosphate buffer, 95% H2O, 5% D2O	150 mM KCl	7.0	ambient	310

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	DRX	600
2	Bruker	DRX	500
3	Bruker	DRX	750

NMR Refinement
Method	Details	Software
simulated annealing	The structures are based on 3744 restraints, 3222 are NOE-derived distance constraints, 160 hydrogen bond restraints, 80 protein NH residual dipolar couplings, 250 dihedral angle restraints.	XwinNMR

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	40
Conformers Submitted Total Number	14
Representative Model	1 (lowest energy)

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	BIOSYM Technologies
4	data analysis	AURELIA	3.108	Bruker
5	refinement	X-PLOR	NIH	Schwieters, C.D., Kuszewski, J.J., Tjandra, N., Clore, G.M.

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.