FIELD: biotechnologies.
SUBSTANCE: this invention is related to the field of biotechnology and may be used in production of various protein products with the help of recombinant DNA technology. New sequences of DNA are defined and generated, which are related to matrix attachment region, which are characterised by ability to improve producing of protein in eukaryotic cells.
EFFECT: methods are suggested for transfection of eukaryotic master cells, including new method of multiple transfection, based on use of active sequenes of DNA MAR according to invention and providing for substantial increase of recombinant protein expression level compared to similar cells transfected by traditional methods.
11 cl, 21 dwg, 9 tbl, 17 ex
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