1HP2

SOLUTION STRUCTURE OF A TOXIN FROM THE SCORPION TITYUS SERRULATUS (TSTX-K ALPHA) DETERMINED BY NMR.

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D NOESY	4.53 mM TsTx-Ka 2.2 mM d11-Tris 0.1 mM EDTA 0.35 mM NaN3	90% H2O/10% D2O	1.44	3.50	1 atm	310
2	DQF-COSY	4.53 mM TsTx-Ka 2.2 mM d11-Tris 0.1 mM EDTA 0.35 mM NaN3	90% H2O/10% D2O	1.44	3.50	1 atm	310
3	TOCSY	4.53 mM TsTx-Ka 2.2 mM d11-Tris 0.1 mM EDTA 0.35 mM NaN3	90% H2O/10% D2O	1.44	3.50	1 atm	310
4	ROESY	4.53 mM TsTx-Ka 2.2 mM d11-Tris 0.1 mM EDTA 0.35 mM NaN3	90% H2O/10% D2O	1.44	3.50	1 atm	310
5	E-COSY	4.53 mM TsTx-Ka 2.2 mM d11-Tris 0.1 mM EDTA 0.35 mM NaN3	100% D2O	1.44	3.50	1 atm	310
6	TOCSY	4.53 mM TsTx-Ka 2.2 mM d11-Tris 0.1 mM EDTA 0.35 mM NaN3	90% H2O/10% D2O	1.44	3.50	1 atm	305
7	TOCSY	4.53 mM TsTx-Ka 2.2 mM d11-Tris 0.1 mM EDTA 0.35 mM NaN3	90% H2O/10% D2O	1.44	3.50	1 atm	300
8	TOCSY	4.53 mM TsTx-Ka 2.2 mM d11-Tris 0.1 mM EDTA 0.35 mM NaN3	90% H2O/10% D2O	1.44	3.50	1 atm	295
9	TOCSY	4.53 mM TsTx-Ka 2.2 mM d11-Tris 0.1 mM EDTA 0.35 mM NaN3	90% H2O/10% D2O	1.44	3.50	1 atm	290
10	2D NOESY	4.53 mM TsTx-Ka 2.2 mM d11-Tris 0.1 mM EDTA 0.35 mM NaN3	90% H2O/10% D2O	1.44	3.50	1 atm	290

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

NMR Refinement
Method	Details	Software
distance geometry simulated annealing	These structures are based on a total of 569 NOE distance contraints, 13 dihedral angle restraints, and 16 phi angle restraints.	X-PLOR

NMR Ensemble Information
Conformer Selection Criteria	structures with acceptable covalent geometry,structures with the least restraint violations,structures with the lowest energy
Conformers Calculated Total Number	100
Conformers Submitted Total Number	30
Representative Model	25 (closest to the average)

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

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	refinement	X-PLOR	3.851	Brunger
2	structure solution	X-PLOR	3.851	Brunger
3	collection	XwinNMR
4	processing	NMRPipe	1.7	Delagilio
5	processing	Felix

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.