2KUX | pdb_00002kux

Solution structure of the cyclotide kalata B5 from Oldenlandia affinis

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D 1H-1H NOESY	1-2mM Kalata-B5	90% H2O/10% D2O	0	5	ambient	298
2	2D 1H-1H TOCSY	1-2mM Kalata-B5	90% H2O/10% D2O	0	5	ambient	298
3	2D DQF-COSY	1-2mM Kalata-B5	90% H2O/10% D2O	0	5	ambient	298

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

NMR Refinement
Method	Details	Software
torsion angle dynamics	Structures were calculated using torsion angle dynamics and subsequently refined by cartesian coordinate dynamics and powell minimization in explicit solvent using CNS.	XwinNMR

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	50
Conformers Submitted Total Number	20
Representative Model	1 (lowest energy)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	XwinNMR		Bruker Biospin
2	processing	XwinNMR		Bruker Biospin
3	data analysis	XEASY		Bartels et al.
4	structure solution	DYANA		Guntert, Braun and Wuthrich
5	refinement	CNS	1.2	Brunger, Adams, Clore, Gros, Nilges and Read