2EFZ

Solution Structure of an M-1 Conotoxin with a novel disulfide linkage

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D NOESY	2.0mM; 0.01% TFA; 90% H2O, 10% D2O	90% H2O/10% D2O		3.0	ambient	294
2	2D TOCSY	2.0mM; 0.01% TFA; 90% H2O, 10% D2O	90% H2O/10% D2O		3.0	ambient	294
3	DQF-COSY	2.0mM; 0.01% TFA; 90% H2O, 10% D2O	90% H2O/10% D2O		3.0	ambient	294
4	2D NOESY	2.0mM; 0.01% TFA; 99.99% D2O	99.99% D2O		3.0	ambient	294
5	2D TOCSY	2.0mM; 0.01% TFA; 99.99% D2O	99.99% D2O		3.0	ambient	294
6	DQF-COSY	2.0mM; 0.01% TFA; 99.99% D2O	99.99% D2O		3.0	ambient	294

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE	500

NMR Refinement
Method	Details	Software
distance geometry, simulated annealing, molecular dynamics	The structure are based on a total of 218 constraints, 190 are NOE-derived distance constraints, 13 dihedral constraints, 15 constraints from 3 hydrogen bonds and 3 disulfide bonds.	XwinNMR

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	XwinNMR	3.5	Bruker Inc.
2	processing	TopSpin	1.3B	Bruker Inc.
3	data analysis	Sparky	3.113	Donald Kneller,Tack kuntz,Tom Forrin,Tom Goddard
4	structure solution	DYANA	1.5	Peter Guntert,Christian Mumenthaler and Torsten Herrmann
5	refinement	Amber	5.0