FIELD: biotechnology, microbiology, genetic engineering.
SUBSTANCE: invention describes construction of recombinant plasmid DNA pFGM17 encoding constitutive synthesis of polypeptide of human granulocytic-macrophagal colony-stimulating factor (GM-CSF) and consisting of Kpn I/Eco RI-fragment of plasmid pSPF1 DNA and artificial DNA sequence encoding signal peptide of the protein Caf1 from Yersinia pestis, and also Kpn I/Eco RI-fragment of intermediate plasmid pSK-GM comprising the synthetic human gene GM-CSF. Escherichia coli cells are transformed with plasmid DNA pFGM17 and strain E. coli BL21(DE3)/pFGM17 is prepared that is a producer of human polypeptide GM-CSF. Invention provides enhancing technological effectiveness and economy of process for preparing recombinant FM-CSF due to excluding the induction stage in biosynthesis process and in simultaneous increasing the yield of the end product by 2 times. Invention can be used for preparing human granulocytic-macrophagal colony-stimulating factor.
EFFECT: valuable properties of plasmid DNA and microorganism strain.
2 cl, 4 dwg, 4 ex
| Title |
Year |
Author |
Number |
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2018 |
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|
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- Gileva I.P.
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- Sandakhchiev L.S.
|
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