2NDD

Structure-activity relationship of peptide toxin HelaTx1: a new kappa-KTx subfamily affecting K+ channel

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D 1H-1H TOCSY	90 % v/v H2O-1, 10 % v/v [U-100% 2H] D2O-2	90% H2O/10% D2O		4.0	ambient	288
2	2D 1H-1H COSY	90 % v/v H2O-1, 10 % v/v [U-100% 2H] D2O-2	90% H2O/10% D2O		4.0	ambient	288
3	2D 1H-1H NOESY	90 % v/v H2O-1, 10 % v/v [U-100% 2H] D2O-2	90% H2O/10% D2O		4.0	ambient	288

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

NMR Refinement
Method	Details	Software
torsion angle dynamics		CYANA

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	100
Conformers Submitted Total Number	20
Representative Model	1 (lowest energy)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	chemical shift assignment	CYANA		Guntert, Mumenthaler and Wuthrich
2	refinement	X-PLOR-NIH

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.