2LYE

High resolution NMR solution structure of a symmetrical theta-defensin, BTD-2

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	0.8 mM BTD-2-1	90% H2O/10% D2O		6	ambient	298
2	2D 1H-1H NOESY	0.8 mM BTD-2-1	90% H2O/10% D2O		6	ambient	298
3	2D 1H-13C HSQC	0.9 mM BTD-2-2	100% D2O		6	ambient	298
4	2D DQF-COSY	0.8 mM BTD-2-1	90% H2O/10% D2O		6	ambient	298
5	2D 1H-1H ECOSY	0.9 mM BTD-2-2	100% D2O		6	ambient	298
6	2D 1H-15N HSQC	0.8 mM BTD-2-1	90% H2O/10% D2O		6	ambient	298

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE	500
2	Bruker	AVANCE	600
3	Bruker	AVANCE	900

NMR Refinement
Method	Details	Software
simulated annealing, torsion angle dynamics	Structures were calculated using the scripts from the RECOORD database.	CcpNmr

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	data analysis	CcpNmr	2.1	CCPN
2	chemical shift assignment	CcpNmr	2.1	CCPN
3	peak picking	CcpNmr	2.1	CCPN
4	collection	TopSpin	2.1	Bruker Biospin
5	processing	TopSpin	2.1	Bruker Biospin
6	structure solution	CYANA	3.0	Guntert, Mumenthaler and Wuthrich
7	refinement	CNS	2.1	Brunger, Adams, Clore, Gros, Nilges and Read
8	refinement	CYANA		Guntert, Mumenthaler and Wuthrich