To achieve broader range of the defensin antimicrobial activity, based on the sd2 gene sequence, the modified gene, sd2mod, was constructed. Hybrid genes, sd2-licBM2, licBM2-sd2, licBM2-sd2mod, and sd2mod-licBM2, in which the wild-type and modified gene sequences were fused in frame with the reporter gene encoding thermostable lichenase, were constructed. Expression of the wild-type, modified, and hybrid genes was examined in the cells of pro- and eukaryotes. It was demonstrated that these genes were efficiently expressed in the cells of lower eukaryotes, the yeast. Inhibiting effect of the SD2 and SDmod proteins as the components of the hybrid proteins, SD2-LicBM2 and SD2mod-LicBM2, on the growth of the Fusarium culmorum hyphae was similar to that of the wild-type and modified proteins. It was shown that the presence of lichenase in the hybrid proteins facilitated selection and analysis of the hybrid proteins expression in transgenic organisms.
Russian Journal of Genetics – Springer Journals
Published: Dec 14, 2005
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