2KLS

Apo-form of the second Ca2+ binding domain of NCX1.4

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D 1H-15N HSQC	0.5 mM [U-100% 13C; U-100% 15N] Na+/Ca2+ exchanger, 20 mM Hepes, 20 mM b-mercaptoethanol, 10mM EDTA	95% H2O/5% D2O	0.02	7.0	ambient	306
2	3D HNCACB	0.5 mM [U-100% 13C; U-100% 15N] Na+/Ca2+ exchanger, 20 mM Hepes, 20 mM b-mercaptoethanol, 10mM EDTA	95% H2O/5% D2O	0.02	7.0	ambient	306
3	3D CBCA(CO)NH	0.5 mM [U-100% 13C; U-100% 15N] Na+/Ca2+ exchanger, 20 mM Hepes, 20 mM b-mercaptoethanol, 10mM EDTA	95% H2O/5% D2O	0.02	7.0	ambient	306
4	3D HCCH-TOCSY	0.5 mM [U-100% 13C; U-100% 15N] Na+/Ca2+ exchanger, 20 mM Hepes, 20 mM b-mercaptoethanol, 10mM EDTA	95% H2O/5% D2O	0.02	7.0	ambient	306
5	3D HNHA	0.5 mM [U-100% 13C; U-100% 15N] Na+/Ca2+ exchanger, 20 mM Hepes, 20 mM b-mercaptoethanol, 10mM EDTA	95% H2O/5% D2O	0.02	7.0	ambient	306
6	3D 1H-15N NOESY	0.5 mM [U-100% 13C; U-100% 15N] Na+/Ca2+ exchanger, 20 mM Hepes, 20 mM b-mercaptoethanol, 10mM EDTA	95% H2O/5% D2O	0.02	7.0	ambient	306
7	3D 1H-13C NOESY aliphatic	0.5 mM [U-100% 13C; U-100% 15N] Na+/Ca2+ exchanger, 20 mM Hepes, 20 mM b-mercaptoethanol, 10mM EDTA	95% H2O/5% D2O	0.02	7.0	ambient	306
8	3D 1H-13C NOESY aromatic	0.5 mM [U-100% 13C; U-100% 15N] Na+/Ca2+ exchanger, 20 mM Hepes, 20 mM b-mercaptoethanol, 10mM EDTA	95% H2O/5% D2O	0.02	7.0	ambient	306

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Varian	INOVA	800
2	Varian	INOVA	600

NMR Refinement
Method	Details	Software
torsion angle dynamics		CYANA

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	100
Conformers Submitted Total Number	20
Representative Model	1 (closest to the average)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	structure solution	CYANA	2.1	Herrmann, Guntert, Wuthrich
2	refinement	X-PLOR		Brunger