1ZNU

Structure of cyclotide Kalata B1 in DPC micelles solution

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D NOESY	3.6mM Kalata B1, 216mM perdeuterated DPC, 90% H2O, 10% D2O	90% H2O/10% D2O	0	2.8	ambient	313
2	2D TOCSY	3.6mM Kalata B1, 216mM perdeuterated DPC, 90% H2O, 10% D2O	90% H2O/10% D2O	0	2.8	ambient	313
3	DQF-COSY	3.6mM Kalata B1, 216mM perdeuterated DPC, 90% H2O, 10% D2O	90% H2O/10% D2O	0	2.8	ambient	313
4	long-range HMQC	3.6mM Kalata B1	100% D2O	0	2.8	ambient	313

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	DRX	500
2	Varian	UNITY	600

NMR Refinement
Method	Details	Software
simulated annealing in torsion angle space	No energy minimization was done	CYANA

NMR Ensemble Information
Conformer Selection Criteria	structures with the least restraint violations, target function
Conformers Calculated Total Number	100
Conformers Submitted Total Number	20
Representative Model	1 (fewest violations)

Additional NMR Experimental Information
Details	This structure was determined from 1H homonuclear data in combination with 3JHBC' measured for Cys residues in D2O solution.

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	structure solution	CYANA	1.01	Guntert,P.
2	processing	XwinNMR	2.6	Bruker
3	processing	VNMR	6.1c	Varian
4	data analysis	XEASY	x	Bartels,C.
5	refinement	CYANA	1.01	P.Guntert