2KQ6

The structure of the EF-hand domain of polycystin-2 suggests a mechanism for Ca2+-dependent regulation of polycystin-2 channel activity

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D 1H-15N HSQC	1 mM [U-15N] protein, 2 mM TRIS pH7.4, 20 mM Ca2+, 150 mM sodium chloride, 5% D2O, 10 uM PMSF	95% H2O/5% D2O	0.150	7.4	ambient	303
2	2D 1H-13C HSQC	1 mM [U-13C; U-15N] protein, 5 % D2O, 0.05 % sodium azide, 10 uM PMSF, 2 mM TRIS pH7.4, 150 mM sodium chloride, 20 mM Ca2+	95% H2O/5% D2O	0.150	7.4	ambient	303
3	2D 1H-1H NOESY	1 mM [U-15N] protein, 2 mM TRIS pH7.4, 20 mM Ca2+, 150 mM sodium chloride, 5% D2O, 10 uM PMSF	95% H2O/5% D2O	0.150	7.4	ambient	303
4	3D CBCA(CO)NH	1 mM [U-13C; U-15N] protein, 5 % D2O, 0.05 % sodium azide, 10 uM PMSF, 2 mM TRIS pH7.4, 150 mM sodium chloride, 20 mM Ca2+	95% H2O/5% D2O	0.150	7.4	ambient	303
5	3D C(CO)NH	1 mM [U-13C; U-15N] protein, 5 % D2O, 0.05 % sodium azide, 10 uM PMSF, 2 mM TRIS pH7.4, 150 mM sodium chloride, 20 mM Ca2+	95% H2O/5% D2O	0.150	7.4	ambient	303
6	3D HNCO	1 mM [U-13C; U-15N] protein, 5 % D2O, 0.05 % sodium azide, 10 uM PMSF, 2 mM TRIS pH7.4, 150 mM sodium chloride, 20 mM Ca2+	95% H2O/5% D2O	0.150	7.4	ambient	303
7	3D HNCA	1 mM [U-13C; U-15N] protein, 5 % D2O, 0.05 % sodium azide, 10 uM PMSF, 2 mM TRIS pH7.4, 150 mM sodium chloride, 20 mM Ca2+	95% H2O/5% D2O	0.150	7.4	ambient	303
8	3D HNCACB	1 mM [U-13C; U-15N] protein, 5 % D2O, 0.05 % sodium azide, 10 uM PMSF, 2 mM TRIS pH7.4, 150 mM sodium chloride, 20 mM Ca2+	95% H2O/5% D2O	0.150	7.4	ambient	303
9	3D HN(CO)CA	1 mM [U-13C; U-15N] protein, 5 % D2O, 0.05 % sodium azide, 10 uM PMSF, 2 mM TRIS pH7.4, 150 mM sodium chloride, 20 mM Ca2+	95% H2O/5% D2O	0.150	7.4	ambient	303
10	3D H(CCO)NH	1 mM [U-13C; U-15N] protein, 5 % D2O, 0.05 % sodium azide, 10 uM PMSF, 2 mM TRIS pH7.4, 150 mM sodium chloride, 20 mM Ca2+	95% H2O/5% D2O	0.150	7.4	ambient	303
11	3D HCCH-TOCSY	1 mM [U-13C; U-15N] protein, 5 % D2O, 0.05 % sodium azide, 10 uM PMSF, 2 mM TRIS pH7.4, 150 mM sodium chloride, 20 mM Ca2+	95% H2O/5% D2O	0.150	7.4	ambient	303
12	3D 1H-15N NOESY	1 mM [U-15N] protein, 2 mM TRIS pH7.4, 20 mM Ca2+, 150 mM sodium chloride, 5% D2O, 10 uM PMSF	95% H2O/5% D2O	0.150	7.4	ambient	303
13	3D 1H-15N TOCSY	1 mM [U-15N] protein, 2 mM TRIS pH7.4, 20 mM Ca2+, 150 mM sodium chloride, 5% D2O, 10 uM PMSF	95% H2O/5% D2O	0.150	7.4	ambient	303
14	3D 1H-13C NOESY	1 mM [U-13C; U-15N] protein, 5 % D2O, 0.05 % sodium azide, 10 uM PMSF, 2 mM TRIS pH7.4, 150 mM sodium chloride, 20 mM Ca2+	95% H2O/5% D2O	0.150	7.4	ambient	303

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

NMR Refinement
Method	Details	Software
XPLOR-NIH		CYANA

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy and least restraint violations
Conformers Calculated Total Number	80
Conformers Submitted Total Number	20
Representative Model	1 (lowest energy)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	refinement	CYANA		Guntert, Mumenthaler and Wuthrich
2	peak picking	Sparky		Goddard
3	processing	NMRDraw		Delaglio, Grzesiek, Vuister, Zhu, Pfeifer and Bax
4	processing	NMRPipe		Delaglio, Grzesiek, Vuister, Zhu, Pfeifer and Bax
5	structure solution	X-PLOR NIH		Schwieters, Kuszewski, Tjandra and Clore
6	geometry optimization	PSVS		Bhattacharya and Montelione
7	data analysis	MOLMOL		Koradi, Billeter and Wuthrich

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.