2LMZ

Solution NMR structure of the novel conotoxin im23a from Conus imperialis

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	128 uM [U-15N] Conotoxin-1	95% H2O/5% D2O		5.6	ambient	293
2	2D 1H-13C HSQC	128 uM [U-15N] Conotoxin-1	95% H2O/5% D2O		5.6	ambient	293
3	2D 1H-1H TOCSY	128 uM [U-15N] Conotoxin-1	95% H2O/5% D2O		5.6	ambient	293
4	2D DQF-COSY	128 uM [U-15N] Conotoxin-1	95% H2O/5% D2O		5.6	ambient	293
5	2D 1H-1H NOESY	128 uM [U-15N] Conotoxin-1	95% H2O/5% D2O		5.6	ambient	293
6	3D 1H-15N NOESY	128 uM [U-15N] Conotoxin-1	95% H2O/5% D2O		5.6	ambient	293
7	2D 1H-1H TOCSY	128 uM Conotoxin-2	95% H2O/5% D2O		5.6	ambient	293
8	2D 1H-1H NOESY	128 uM Conotoxin-2	95% H2O/5% D2O		5.6	ambient	293

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	DRX	600
2	Bruker	AVANCE	800
3	Bruker	AVANCE	500

NMR Refinement
Method	Details	Software
simulated annealing		TopSpin

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	200
Conformers Submitted Total Number	20
Representative Model	1 (closest to the average)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	TopSpin		Bruker Biospin
2	data analysis	TopSpin		Bruker Biospin
3	chemical shift assignment	XEASY		Bartels et al.
4	processing	XEASY		Bartels et al.
5	peak picking	XEASY		Bartels et al.
6	structure solution	X-PLOR NIH		Schwieters, Kuszewski, Tjandra and Clore
7	refinement	X-PLOR NIH		Schwieters, Kuszewski, Tjandra and Clore