Abstract
Several newly reported post-translational modification reactions are involved in lantibiotic biosynthesis. A short overview of the present knowledge on the post-translational modifications and on the enzymes involved in lantibiotic biosynthesis is given. The oxidative decarboxylation of the epidermin precursor peptide EpiA is described in detail. The FMN-containing oxidoreductase EpiD is involved in the formation of the C-terminal S-[(Z)-2-aminovinyl]-D-cysteine residue of epidermin: under reducing conditions the side chain of the C-terminal cysteine residue of EpiA is converted to an enethiol. EpiD has no absolute substrate specificity and can be used for modification of peptides having the C-terminal consensus motif [V/I/L/(M)/F/Y/W]-[A/S/V/T/C/(I/L)]-C.
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Abbreviations
- Dha:
-
2,3-didehydroalanine
- Dhb:
-
(Z)-2,3-didehydrobutyrine
- ES-MS:
-
Electrospray Mass Spectrometry
- FAD:
-
Flavin Adenine Dinucleotide
- FMN:
-
Flavin Mononucleotide
- MBP:
-
Maltose-Binding Protein
- TFA:
-
TrifluoroAcetic Acid
- TLC:
-
Thin-Layer Chromatography
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Kupke, T., Götz, F. Post-translational modifications of lantibiotics. Antonie van Leeuwenhoek 69, 139–150 (1996). https://doi.org/10.1007/BF00399419
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DOI: https://doi.org/10.1007/BF00399419