2KXL

Solution structure of a bacterial cyclic nucleotide-activated K+ channel binding domain in the unliganded state

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D 1H-15N HSQC	0.5 mM [U-15N] MloK1 CNBD, 10 mM [U-99% 2H] TRIS, 100 mM sodium chloride, 0.02 % sodium azide, 5 % [U-100% 2H] D2O, 95 % H2O, 200 uM EDTA	95% H2O/5% D2O		7	ambient	298
2	2D 1H-13C HSQC	0.5 mM [U-13C; U-15N] MloK1 CNBD, 10 mM [U-99% 2H] TRIS, 100 mM sodium chloride, 0.02 % sodium azide, 5 % [U-100% 2H] D2O, 95 % H2O, 200 uM EDTA	95% H2O/5% D2O		7	ambient	298
3	3D HNCACB	0.5 mM [U-13C; U-15N] MloK1 CNBD, 10 mM [U-99% 2H] TRIS, 100 mM sodium chloride, 0.02 % sodium azide, 5 % [U-100% 2H] D2O, 95 % H2O, 200 uM EDTA	95% H2O/5% D2O		7	ambient	298
4	3D HNCO	0.5 mM [U-13C; U-15N] MloK1 CNBD, 10 mM [U-99% 2H] TRIS, 100 mM sodium chloride, 0.02 % sodium azide, 5 % [U-100% 2H] D2O, 95 % H2O, 200 uM EDTA	95% H2O/5% D2O		7	ambient	298
5	3D HNHA	0.5 mM [U-13C; U-15N] MloK1 CNBD, 10 mM [U-99% 2H] TRIS, 100 mM sodium chloride, 0.02 % sodium azide, 5 % [U-100% 2H] D2O, 95 % H2O, 200 uM EDTA	95% H2O/5% D2O		7	ambient	298
6	3D HCCH-TOCSY	0.5 mM [U-13C; U-15N] MloK1 CNBD, 10 mM [U-99% 2H] TRIS, 100 mM sodium chloride, 0.02 % sodium azide, 5 % [U-100% 2H] D2O, 95 % H2O, 200 uM EDTA	95% H2O/5% D2O		7	ambient	298
7	3D HCCH-COSY	0.5 mM [U-13C; U-15N] MloK1 CNBD, 10 mM [U-99% 2H] TRIS, 100 mM sodium chloride, 0.02 % sodium azide, 5 % [U-100% 2H] D2O, 95 % H2O, 200 uM EDTA	95% H2O/5% D2O		7	ambient	298
8	3D 1H-15N NOESY	0.5 mM [U-15N] MloK1 CNBD, 10 mM [U-99% 2H] TRIS, 100 mM sodium chloride, 0.02 % sodium azide, 5 % [U-100% 2H] D2O, 95 % H2O, 200 uM EDTA	95% H2O/5% D2O		7	ambient	298
9	3D 1H-13C NOESY	0.5 mM [U-13C; U-15N] MloK1 CNBD, 10 mM [U-99% 2H] TRIS, 100 mM sodium chloride, 0.02 % sodium azide, 5 % [U-100% 2H] D2O, 95 % H2O, 200 uM EDTA	95% H2O/5% D2O		7	ambient	298
10	2D 1H-1H NOESY	0.5 mM [U-13C; U-15N] MloK1 CNBD, 10 mM [U-99% 2H] TRIS, 100 mM sodium chloride, 0.02 % sodium azide, 5 % [U-100% 2H] D2O, 95 % H2O, 200 uM EDTA	95% H2O/5% D2O		7	ambient	298

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

NMR Refinement
Method	Details	Software
torsion angle dynamics, simulated annealing		VnmrJ

NMR Ensemble Information
Conformer Selection Criteria	target function
Conformers Calculated Total Number	100
Conformers Submitted Total Number	15
Representative Model	1 (fewest violations)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	VnmrJ		Varian
2	processing	NMRPipe		Delaglio, Grzesiek, Vuister, Zhu, Pfeifer and Bax
3	peak picking	CARA		Keller and Wuthrich
4	chemical shift assignment	CARA		Keller and Wuthrich
5	data analysis	CARA		Keller and Wuthrich
6	structure solution	CYANA	1.1	Guntert, Mumenthaler and Wuthrich
7	refinement	CYANA	1.1	Guntert, Mumenthaler and Wuthrich

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), 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.