1SNL

NMR Solution Structure of the Calcium-binding Domain of Nucleobindin (CALNUC)

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	15N-HSQC, 3D-15N_separated-NOESY	1mM Ca-binding domain of nucleobindin, U-15N, 5mM CaCl2, 0.1mM NaN3, pH 6.8	90% H2O/10% D2O	5 mM CaCl2, 0.1 mM NaN3, 5mM KCl	6.8	ambient	300
2	4D-15N,13C_separated_NOESY, HNCO, CBCACONH, HNCACB, HCONHCCONH	1mM Ca-binding domain of nucleobindin, U-15N,U-13C, 5mM CaCl2, 0.1mM NaN3, pH 6.8	90% H2O/10% D2O	5 mM CaCl2, 0.1 mM NaN3, 5mM KCl	6.8	ambient	300
3	4D-13C,13C_separated_NOESY,HCCH-TOCSY	1mM Ca-binding domain of nucleobindin, U-15N,U-13C, 5mM CaCl2, 0.1mM NaN3, pH 6.8	100% D2O	5 mM CaCl2, 0.1 mM NaN3, 5mM KCl	6.8	ambient	300
4	HNCO, HCACONH, 13C-HSQC_JMOD	0.7mM Ca-binding domain of nucleobindin, U-15N,U-13C, 5mM CaCl2, 0.1mM NaN3, pH 6.8	90% H2O, 10% D2O, Pf1 bacteriophage	5 mM CaCl2, 0.1 mM NaN3, 5mM KCl	6.8	ambient	300

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

NMR Refinement
Method	Details	Software
distance geometry simulated annealing	Residual dipolar couplings used for structure refinement. Residues 1-17, 47-63, 95-99 are flexible and were not considered in the superposition of the 20 structures.	UXNMR

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	200
Conformers Submitted Total Number	20
Representative Model	1 (lowest energy)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	UXNMR	2.5	Bruker
2	data analysis	XwinNMR	2.5	Bruker
3	processing	NMRPipe	2.1	Delaglio, F.
4	data analysis	PIPP	4.2.8	Garrett, D.
5	refinement	XPLOR-NIH	2.9.3	Schwieters, kuszewski, Tjandra, Clore