2LAM

Three-dimensional structure of the cyclotide Cter M

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D 1H-1H TOCSY	1 mM Cter M	70% H2O/20%CD3CN/10% D2O	ambient	4		298
2	2D 1H-1H NOESY	1 mM Cter M	70% H2O/20%CD3CN/10% D2O	ambient	4		298
3	2D DQF-COSY	1 mM Cter M	70% H2O/20%CD3CN/10% D2O	ambient	4		298

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE	900
2	Bruker	AVANCE	600

NMR Refinement
Method	Details	Software
torsion angle dynamics		TopSpin

NMR Ensemble Information
Conformer Selection Criteria	structures with the least restraint violations
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	XEASY		Bartels et al.
3	structure solution	CYANA		Guntert, Mumenthaler and Wuthrich
4	structure solution	CNSSOLVE		Brunger, Adams, Clore, Gros, Nilges and Read
5	refinement	CNSSOLVE		Brunger, Adams, Clore, Gros, Nilges and Read