| Autor: |
Novikova, Svetlana I., Bushueva, Anastassia M., Trachuk, Lesya A., Konstantinova, Galina E., Serkina, Anna V., Hoischen, Christian, Gumpert, Johannes, Chestukhina, Galina G., Mankin, Alexander, Shevelev, Alexei B. |
| Zdroj: |
FEMS Microbiology Letters; January 2000, Vol. 182 Issue: 2 p213-218, 6p |
| Abstrakt: |
A 15‐bp mini‐gene was introduced into Bacillus subtilisand into stable protoplast‐like L‐forms of Proteus mirabilis. This mini‐gene encoded the peptide MVLFV and modeled a fragment of Escherichia coli23S rRNA responsible for E. colierythromycin (Ery) resistance. Expression of the introduced mini‐gene conferred permanent Ery resistance on B. subtilis. In L‐forms of P. mirabilis, the Ery‐protective effect was maintained in the course of several generations. Herewith, the mechanism of Ery resistance mediated by expression of specific short peptides was shown to exist in evolutionary distant bacteria. Three new plasmids were constructed containing the gene under study transcriptionally fused with the genes encoding glutamylendopeptidase of Bacillus licheniformisor δ‐endotoxin of Bacillus thuringiensis. The Ery resistance pentapeptide (E‐peptide) mini‐gene served as an efficient direct transcriptional reporter and allowed to select bacillar glutamylendopeptidase with improved productivity. The mini‐genes encoding E‐peptides may be applied as selective markers to transform both Gram‐positive and Gram‐negative bacteria. The small size of the E‐peptide mini‐genes makes them attractive selective markers for vector construction. |
| Databáze: |
Supplemental Index |
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