1MXN

Solution structure of alpha-conotoxin AuIB

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D NOESY	2mM peptide	90% H2O/10% D2O	0	3.5	atmospheric atm	290
2	2D TOCSY	2mM peptide	90% H2O/10% D2O	0	3.5	atmospheric atm	290
3	E-COSY	2mM peptide	90% H2O/10% D2O	0	3.5	atmospheric atm	290
4	DQF-COSY	2mM peptide	90% H2O/10% D2O	0	3.5	atmospheric atm	290

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	DMX	750
2	Bruker	ARX	500

NMR Refinement
Method	Details	Software
simulated annealing, molecular dynamics, energy minimisation in a CHARM forcefield	32 medium and 18 long range NOEs were included, 7 dihedral angle restraints were included, 5 H-bond restraints were included	XwinNMR

NMR Ensemble Information
Conformer Selection Criteria	structures with the least restraint violations,structures with the lowest energy
Conformers Calculated Total Number	50
Conformers Submitted Total Number	20
Representative Model	8 (closest to the average)

Additional NMR Experimental Information
Details	This structure was determined using standard 2D homonuclear techniques.

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	XwinNMR	2.6	Bruker
2	processing	XwinNMR	2.6	Bruker
3	refinement	X-PLOR	3.851 then 3.1f	Brunger
4	structure solution	X-PLOR	3.851 then 3.1f	Brunger