Abstract
To obtain transgenic tobacco plants expressing recombinant analogs of spider dragline silk spidroin 1, artificial 1f5 and 1f 9 coding for spidroin 1 analogs were 3"-fused in-frame with the reporter lichenase gene. The Tr2" weak constitutive promoter of Agrobacterium tumefaciens T-DNA and the strong constitutive promoter of the cauliflower mosaic virus 35S RNA gene were used as regulatory elements. The expression cassettes were used to transform agrobacteria and then introduced in tobacco leaf disks. On evidence of Southern hybridization, transgenic plants each carried a single copy of a hybrid gene, which corresponded in size to the constructed one. Zymography and Western blotting revealed full-length hybrid proteins in leaf extracts of transgenic plants. The results testified that plants can maintain and express synthetic genes for spider silks and, consequently, may be used as a convenient producer of recombinant silk analogs.
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Piruzian, E.S., Bogush, V.G., Sidoruk, K.V. et al. Construction of Synthetic Genes for Analogs of Spider Silk Spidroin 1 and Their Expression in Tobacco Plants. Molecular Biology 37, 554–560 (2003). https://doi.org/10.1023/A:1025187311024
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DOI: https://doi.org/10.1023/A:1025187311024