FIELD: medicine.
SUBSTANCE: there is offered a method of engineering yeast strains - stable human growth hormone (somatotropin) producers. Also, there are offered two strains Y-3506 of Russian National Collection of Industrial Microorganisms and Y-3507 of Russian National Collection of Industrial Microorganisms - stable human somatotropin producers. The producer strains have been prepared by sequential integration of expression plasmid into a recipient stain genome. Each plasmid carries in its structure a somatotropin gene (GH1); fused with a leader sequence controlled by the GAL1 promotor, as well as one of the genes URA3, LEU2, TRP1 and HIS3 complementing auxotrophic recipient strain mutations.
EFFECT: efficacy of the produced strains is 100-130 mg of somatotropin per 1 l of the medium.
3 cl, 7 dwg, 6 ex
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