6AZA

NMR structure of sea anemone toxin Kappa-actitoxin-Ate1a

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D 1H-15N HSQC	1 mM AteTx1, 20 mM sodium phosphate, 5 % D2O, 95 % H2O	95% H2O/5% D2O	20 mM	6	1 atm	283	Bruker AVANCE III 600
2	2D 1H-13C HSQC	1 mM AteTx1, 20 mM sodium phosphate, 5 % D2O, 95 % H2O	95% H2O/5% D2O	20 mM	6	1 atm	283	Bruker AVANCE III 600
3	2D 1H-1H TOCSY	1 mM AteTx1, 20 mM sodium phosphate, 5 % D2O, 95 % H2O	95% H2O/5% D2O	20 mM	6	1 atm	283	Bruker AVANCE III 600
4	2D 1H-1H NOESY	1 mM AteTx1, 20 mM sodium phosphate, 5 % D2O, 95 % H2O	95% H2O/5% D2O	20 mM	6	1 atm	283	Bruker AVANCE III 600
5	2D 1H-13C HSQC	1 mM AteTx1, 20 mM sodium phosphate, 100 % D2O	100% D2O	20 mM	6	1 atm	283	Bruker AVANCE III 600
6	2D 1H-1H TOCSY	1 mM AteTx1, 20 mM sodium phosphate, 100 % D2O	100% D2O	20 mM	6	1 atm	283	Bruker AVANCE III 600

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

NMR Refinement
Method	Details	Software
torsion angle dynamics		CYANA

NMR Ensemble Information
Conformer Selection Criteria	Target function and stereochemical quality judged by Molprobity
Conformers Calculated Total Number	200
Conformers Submitted Total Number	20
Representative Model	1 (lowest energy)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	refinement	CYANA		Guntert, Mumenthaler and Wuthrich
2	structure calculation	CYANA		Guntert, Mumenthaler and Wuthrich
3	chemical shift assignment	Analysis		CCPN
4	peak picking	Analysis		CCPN
5	processing	TopSpin		Bruker Biospin
6	collection	TopSpin		Bruker Biospin