7LGL

Structural characterization of two b-KTx scorpion toxins. One of them blocks human KCNQ1 potassium channels

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D 1H-1H NOESY	1.2 mM TcoKIK	95% H2O/5% D2O	0	6.8	1 atm	298	Bruker AVANCE II 700
2	2D 1H-1H COSY	1.2 mM TcoKIK	95% H2O/5% D2O	0	6.8	1 atm	298	Bruker AVANCE II 700
3	2D 1H-1H TOCSY	1.2 mM TcoKIK	95% H2O/5% D2O	0	6.8	1 atm	298	Bruker AVANCE II 700

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE II	700

NMR Refinement
Method	Details	Software
molecular dynamics		Amber

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	refinement	Amber	16	Case, Darden, Cheatham III, Simmerling, Wang, Duke, Luo, ... and Kollman
2	structure calculation	CYANA	2.1	Guntert, Mumenthaler and Wuthrich
3	chemical shift assignment	CARA	1.5	Keller and Wuthrich
4	peak picking	CARA	1.5	Keller 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.