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