2NBC

Resonance assignments and structure determination of poneritoxin, omega-PONTX-Ae1a, from Anochetus emarginatus

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	2 mM omega-PONTX-Ae1a, 2 mM AMINO GROUP, 5 % D2O, 20 mM sodium phosphate	95% H2O/5% D2O	20	6	ambient	298
2	2D 1H-13C HSQC	2 mM omega-PONTX-Ae1a, 2 mM AMINO GROUP, 5 % D2O, 20 mM sodium phosphate	95% H2O/5% D2O	20	6	ambient	298
3	2D 1H-1H TOCSY	2 mM omega-PONTX-Ae1a, 2 mM AMINO GROUP, 5 % D2O, 20 mM sodium phosphate	95% H2O/5% D2O	20	6	ambient	298
4	2D 1H-1H NOESY	2 mM omega-PONTX-Ae1a, 2 mM AMINO GROUP, 5 % D2O, 20 mM sodium phosphate	95% H2O/5% D2O	20	6	ambient	298
5	2D 1H-1H NOESY	2 mM omega-PONTX-Ae1a, 2 mM AMINO GROUP, 100 % D2O, 20 mM sodium phosphate	100% D2O	20	6	ambient	298
6	2D 1H-13C HSQC	2 mM omega-PONTX-Ae1a, 2 mM AMINO GROUP, 100 % D2O, 20 mM sodium phosphate	100% D2O	20	6	ambient	298

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

NMR Refinement
Method	Details	Software
torsion angle dynamics		TOPSPIN

NMR Ensemble Information
Conformer Selection Criteria	Best stereochemical property judged by Molprobity
Conformers Calculated Total Number	30
Conformers Submitted Total Number	20
Representative Model	1 (lowest energy)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	TOPSPIN		Bruker Biospin
2	processing	TOPSPIN		Bruker Biospin
3	structure solution	CYANA		Guntert, Mumenthaler and Wuthrich
4	peak picking	CcpNmr_Analysis		CCPN
5	chemical shift assignment	CcpNmr_Analysis		CCPN
6	dihedral angle prediction	TALOS		Cornilescu, Delaglio and Bax
7	refinement	CYANA