1KKD

Solution structure of the calmodulin binding domain (CaMBD) of small conductance Ca2+-activated potassium channels (SK2)

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	3D_15N-separated_NOESY	1.2 mM U-15N CaMBD (residues 396-487 of rat SK2); 250 mM NaCl, 0.05 % Na-azide	90% H2O/10% D2O	250 mM	3.5	ambient	298
2	HNHA	1.2 mM U-15N CaMBD (residues 396-487 of rat SK2); 250 mM NaCl, 0.05 % Na-azide	90% H2O/10% D2O	250 mM	3.5	ambient	298
3	2D NOESY	1 mM CaMBD (residues 396-487 of rat SK2); 250 mM NaCl, 0.05 % Na-azide	90% H2O/10% D2O	250 mM	3.5	ambient	298
4	2D NOESY	1 mM CaMBD (residues 396-487 of rat SK2); 250 mM NaCl, 0.05 % Na-azide	100% D2O	250 mM	3.5	ambient	298

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

NMR Refinement
Method	Details	Software
SIMULATED ANNEALING, TORSION ANGLE DYNAMICS	see Table 1 in the primary citation for structural statistics	XwinNMR

NMR Ensemble Information
Conformer Selection Criteria	structures with the least restraint violations,target function
Conformers Calculated Total Number	300
Conformers Submitted Total Number	23
Representative Model	22 (closest to the average)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	XwinNMR	2.6	Bruker
2	data analysis	AURELIA	2.7.5	Neidig
3	data analysis	XEASY	1.3.13	ETH Zuerich
4	structure solution	DYANA	1.5	MUMENTHALER, GUENTERT
5	refinement	DYANA	1.5	MUMENTHALER, GUENTERT

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.