2MAK

Solution structure of the STIM1 CC1-CC2 homodimer in complex with two Orai1 C-terminal domains.

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D 1H-15N HSQC	0.25 mM [U-100% 15N] protein_1, 3.0 mM protein_2, 20 mM bis-TRIS, 0.175 v/v [U-99% 2H] TFE	90% H2O/10% D2O	0.02	5.5	ambient	308
2	3D HNCACB	0.25 mM [U-99% 13C; U-99% 15N] protein_1, 3.0 mM protein_2, 20 mM bis-TRIS, 0.175 v/v [U-99% 2H] TFE	90% H2O/10% D2O	0.02	5.5	ambient	308
3	3D CBCA(CO)NH	0.25 mM [U-99% 13C; U-99% 15N] protein_1, 3.0 mM protein_2, 20 mM bis-TRIS, 0.175 v/v [U-99% 2H] TFE	90% H2O/10% D2O	0.02	5.5	ambient	308
4	3D HNCO	0.25 mM [U-99% 13C; U-99% 15N] protein_1, 3.0 mM protein_2, 20 mM bis-TRIS, 0.175 v/v [U-99% 2H] TFE	90% H2O/10% D2O	0.02	5.5	ambient	308
5	3D C(CO)NH TOCSY	0.25 mM [U-99% 13C; U-99% 15N] protein_1, 3.0 mM protein_2, 20 mM bis-TRIS, 0.175 v/v [U-99% 2H] TFE	90% H2O/10% D2O	0.02	5.5	ambient	308
6	3D H(CCO)NH TOCSY	0.25 mM [U-99% 13C; U-99% 15N] protein_1, 3.0 mM protein_2, 20 mM bis-TRIS, 0.175 v/v [U-99% 2H] TFE	90% H2O/10% D2O	0.02	5.5	ambient	308
7	3D 1H-15N NOESY	0.25 mM [U-100% 15N] protein_1, 3.0 mM protein_2, 20 mM bis-TRIS, 0.175 v/v [U-99% 2H] TFE	90% H2O/10% D2O	0.02	5.5	ambient	308
8	2D 1H-13C HSQC	0.25 mM [U-99% 13C; U-99% 15N] protein_1, 3.0 mM protein_2, 20 mM bis-TRIS, 0.175 v/v [U-99% 2H] TFE	100% D2O	0.02	5.5	ambient	308
9	3D 1H-13C NOESY	0.25 mM [U-99% 13C; U-99% 15N] protein_1, 3.0 mM protein_2, 20 mM bis-TRIS, 0.175 v/v [U-99% 2H] TFE	100% D2O	0.02	5.5	ambient	308
10	2D 1H-15N HSQC	2.5 mM protein_1, 0.25 mM [U-99% 15N] protein_2, 20 mM bis-TRIS, 0.175 v/v [U-99% 2H] TFE	90% H2O/10% D2O	0.02	5.5	ambient	308
11	2D 1H-13C HSQC	2.5 mM protein_1, 0.25 mM [U-99% 13C; U-99% 15N] protein_2, 20 mM bis-TRIS, 0.175 v/v [U-99% 2H] TFE	100% D2O	0.02	5.5	ambient	308
12	3D 1H-15N NOESY	2.5 mM protein_1, 0.25 mM [U-99% 15N] protein_2, 20 mM bis-TRIS, 0.175 v/v [U-99% 2H] TFE	90% H2O/10% D2O	0.02	5.5	ambient	308
13	3D 1H-13C NOESY	2.5 mM protein_1, 0.25 mM [U-99% 13C; U-99% 15N] protein_2, 20 mM bis-TRIS, 0.175 v/v [U-99% 2H] TFE	100% D2O	0.02	5.5	ambient	308

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

NMR Refinement
Method	Details	Software
simulated annealing	Used the RECOORD scripts in CNS to water refine the CYANA-determined structures (Nederveen et al., Proteins. 2005 Jun 1;59(4):662-72).	NMRPipe

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	processing	NMRPipe		Delaglio, Grzesiek, Vuister, Zhu, Pfeifer and Bax
2	chemical shift assignment	XEASY		Bartels et al.
3	peak picking	XEASY		Bartels et al.
4	data analysis	TALOS		Cornilescu, Delaglio and Bax
5	geometry optimization	TALOS		Cornilescu, Delaglio and Bax
6	structure solution	CYANA	3.0	Guntert, Mumenthaler and Wuthrich
7	refinement	CNS		Brunger, Adams, Clore, Gros, Nilges and Read
8	geometry optimization	CNS		Brunger, Adams, Clore, Gros, Nilges and Read

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.