2H1Z

Structure of a dual-target spider toxin

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	3D_15N-separated_NOESY	1 mM U-15N,13C hybrid atracotoxin; 50 mM NaCl; 20 mM sodium phosphate, 90% H2O,10% D2O	90% H2O/10% D2O	50 mM NaCl, 20 mM NaPi	6.0	1 atm	298
2	HNHA	1 mM U-15N,13C hybrid atracotoxin; 50 mM NaCl; 20 mM sodium phosphate, 90% H2O,10% D2O	90% H2O/10% D2O	50 mM NaCl, 20 mM NaPi	6.0	1 atm	298
3	HNHB	1 mM U-15N,13C hybrid atracotoxin; 50 mM NaCl; 20 mM sodium phosphate, 90% H2O,10% D2O	90% H2O/10% D2O	50 mM NaCl, 20 mM NaPi	6.0	1 atm	298
4	3D_13C-separated_NOESY	1 mM U-15N,13C hybrid atracotoxin; 50 mM NaCl; 20 mM sodium phosphate	100% D2O	50 mM NaCl, 20 mM NaPi	6.0	1 atm	298

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Varian	INOVA	600
2	Varian	INOVA	500

NMR Refinement
Method	Details	Software
torsion angle dynamics (CYANA) followed by simulated annealing (X-PLOR)		NMRPipe

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	60
Conformers Submitted Total Number	25
Representative Model	1 (lowest energy)

Additional NMR Experimental Information
Details	Dihedral-angle restraints were generated from TALOS analysis of chemical shift data.

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	processing	NMRPipe		Delaglio, F., Grzesiek, S., Vuister, G.W., Zhu, G., Pfeifer, J., and Bax, A.
2	data analysis	XEASY		Xia, T.-H. and Bartels, C.
3	structure solution	CYANA	1.1	Guntert, P. and Herrman, T.
4	refinement	X-PLOR	3.851	Brunger, A.