1I26

SOLUTION STRUCTURE OF PTU-1, A TOXIN FROM THE ASSASSIN BUGS PEIRATES TURPIS THAT BLOCKS THE VOLTAGE SENSITIVE CALCIUM CHANNEL N-TYPE

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D NOESY			water	4.5		300
2	2D TOCSY

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE	500

NMR Refinement
Method	Details	Software
distance geometry		DYANA

NMR Ensemble Information
Conformer Selection Criteria
Conformers Calculated Total Number	26
Conformers Submitted Total Number	26

Additional NMR Experimental Information
Details	This structure was determined using standard 2D homonuclear techniques.

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	structure solution	DYANA		Guntert, P. et al.
2	collection	XwinNMR		Bruker
3	refinement	X-PLOR		Brunger, A.T. et al.

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.