2G9P

NMR structure of a novel antimicrobial peptide, latarcin 2a, from spider (Lachesana tarabaevi) venom

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D TOCSY	1.7 mM Ltc2a; 102 mM SDS-d25, 95% H2O, 5% D2O	95% H2O/5% D2O	no salt	6.8	ambient	318
2	2D NOESY	1.7 mM Ltc2a; 102 mM SDS-d25, 95% H2O, 5% D2O	95% H2O/5% D2O	no salt	6.8	ambient	318
3	2D TOCSY	1.7 mM Ltc2a; 102 mM SDS-d25, 100 % D2O	100% D2O	no salt	6.8	ambient	318
4	2D NOESY	1.7 mM Ltc2a; 102 mM SDS-d25, 100 % D2O	100% D2O	no salt	6.8	ambient	318

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

NMR Refinement
Method	Details	Software
torsion angle dynamics followed by refinement in implicit membrane model (water/octanol/water slab)	In total, 222 distance and 123 torsion angles constraints were used for structure calculation	VNMR

NMR Ensemble Information
Conformer Selection Criteria	target function
Conformers Calculated Total Number	200
Conformers Submitted Total Number	20
Representative Model	1 (lowest energy)

Additional NMR Experimental Information
Details	This structure was determined using standard 2D homonuclear techniques.

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	VNMR	6.1.C.	Varian, Co
2	collection	XwinNMR	3.1.a	Bruker, GMBh
3	structure solution	CYANA	1.0.6.	Herrmann T., Guentert P., Wuethrich K.
4	refinement	FANMEM		von Freyberg, B., Braun, W., Nolde, D.E., Volynsky, P.E., Arseniev, A.S., Efremov, R.G.
5	data analysis	XEASY	40300000	Bartels, C., Xia, T., Billeter, M., Guentert, P., Wuetrich, K.
6	data analysis	MOLMOL	2K.1	Koradi, R., Billetr, M., Wuetrich, K.