Biosynthetic Uniform 13C,15N-Labelling of Zervamicin Iib. Complete 13C and 15N NMR Assignment.Ovchinnikova, T.V., Shenkarev, Z.O., Yakimenko, Z.A., Svishcheva, N.V., Tagaev, A.A., Skladnev, D.A., Arseniev, A.S.
(2003) J Pept Sci 9: 817-826
- PubMed: 14658801
- DOI: 10.1002/psc.499
- Primary Citation of Related Structures:
- PubMed Abstract:
- NMR Structure of the Channel-Former Zervamicin Iib in Isotropic Solvents
Balashova, T.A., Shenkarev, Z.O., Tagaev, A.A., Ovchinnikova, T.V., Raap, J., Arseniev, A.S.
(2000) FEBS Lett 466: 333
Zervamicin IIB is a member of the alpha-aminoisobutyric acid containing peptaibol antibiotics. A new procedure for the biosynthetic preparation of the uniformly 13C- and 15N-enriched peptaibol is described This compound was isolated from the biomass of t ...
Zervamicin IIB is a member of the alpha-aminoisobutyric acid containing peptaibol antibiotics. A new procedure for the biosynthetic preparation of the uniformly 13C- and 15N-enriched peptaibol is described This compound was isolated from the biomass of the fungus-producer Emericellopsis salmosynnemata strain 336 IMI 58330 obtained upon cultivation in the totally 13C, 15N-labelled complete medium. To prepare such a medium the autolysed biomass and the exopolysaccharides of the obligate methylotrophic bacterium Methylobacillus flagellatus KT were used. This microorganism was grown in totally 13C, 15N-labelled minimal medium containing 13C-methanol and 15N-ammonium chloride as the only carbon and nitrogen sources. Preliminary NMR spectroscopic analysis indicated a high extent of isotope incorporation (> 90%) and led to the complete 13C- and 15N-NMR assignment including the stereospecific assignment of Aib residues methyl groups. The observed pattern of the structurally important secondary chemical shifts of 1H(alpha), 13C=O and 13C(alpha) agrees well with the previously determined structure of zervamicin IIB in methanol solution.
Shemyakin & Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia. firstname.lastname@example.org