2LL1

High-resolution solution structure of the orally active insecticidal spider venom peptide U1-TRTX-Sp1a

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	700 uM U1-TRTX-Sp1a, 10 mM potassium phosphate	95% H2O/5% D2O		5.85	ambient	298
2	2D 1H-13C HSQC	700 uM U1-TRTX-Sp1a, 10 mM potassium phosphate	95% H2O/5% D2O		5.85	ambient	298
3	2D 1H-1H TOCSY	700 uM U1-TRTX-Sp1a, 10 mM potassium phosphate	95% H2O/5% D2O		5.85	ambient	298
4	2D DQF-COSY	700 uM U1-TRTX-Sp1a, 10 mM potassium phosphate	95% H2O/5% D2O		5.85	ambient	298
5	2D 1H-1H NOESY	700 uM U1-TRTX-Sp1a, 10 mM potassium phosphate	95% H2O/5% D2O		5.85	ambient	298

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE	900

NMR Refinement
Method	Details	Software
torsion angle dynamics		TopSpin

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	100
Conformers Submitted Total Number	20
Representative Model	1 (lowest energy)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	TopSpin		Bruker Biospin
2	chemical shift assignment	CCPNMR		CCPN
3	data analysis	CCPNMR		CCPN
4	structure solution	CYANA		Guntert, Mumenthaler and Wuthrich
5	refinement	CYANA		Guntert, Mumenthaler and Wuthrich