1PE4

SOLUTION STRUCTURE OF TOXIN CN12 FROM CENTRUROIDES NOXIUS ALFA SCORPION TOXIN ACTING ON SODIUM CHANNELS. NMR STRUCTURE

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	DQF COSY, 2D TOCSY, AND 2D NOSEY	0.6 mM in H2O/D2O 90:10%;	90% H2O and 10% D2O	none	3.1	ambient	300
2	DQF-COSY, 2D TOCSY, AND 2D NOESY	0.6 mM in 100% D2O	100% D2O	none	3.1	ambient	300

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Varian	UNITYPLUS	500

NMR Refinement
Method	Details	Software
simulated annealing	SEE JOURNAL REFERENCE	CNS

NMR Ensemble Information
Conformer Selection Criteria	NO RESTRAINT VIOLATIONS LESS THAN 0.2 ANGSTROMS AND MIMINUM ENERGY LESS THAN 115.0 KCAL/MOL BEST REPRESENTATIVE CONFORMER IN THIS ENSEMBLE: 1
Conformers Calculated Total Number	250
Conformers Submitted Total Number	19
Representative Model	1 (minimized average structure)

Additional NMR Experimental Information
Details	THE STRUCTURE WAS DETERMINED USING HOMONUCLEAR 1H-1H 2D NMR ON THE NATURAL TOXIN EXTRACTED FROM THE SCORPION VENOM

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	refinement	CNS	1.1	BRUNGER
2	processing	NMRPipe	1	DELAGLIO
3	collection	VNMR	6.1c	VARIAN

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.