FIELD: chemistry.
SUBSTANCE: invention relates to biotechnology, namely, to genetic engineering and represents a method for constructing recombinant strain of Staphylococcus carnosus - producent of enzyme nitritereductase. The said method ensures obtaining intermediate strain Staphylococcus carnosus thyA- by means of trimetoprim and replacement therein of promoter part of the operon responsible for reduction of nitrites during respiration.
EFFECT: obtaining a new strain suitable for reduction of concentration of remaining nitrite in food products.
4 dwg, 5 ex
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