RECOMBINANT PLASMID DNA PROVIDING SYNTHESIS OF BORRELIA GARINII IMMUNODOMINANT PROTEIN FOR LYME-BORRELIOSIS DIAGNOSIS

摘要

FIELD: gene engineering, biotechnology, medicine.;SUBSTANCE: invention relates to production of polypeptides bearing specific antigen determinants of OspC protein and FlaB flagellin fragment appropriate to genus Borrelia garinii being prevalent in Russia. Recombinant plasmid pREB9-H6-F7 DNA providing synthesis of B.garnii FlaB protein fragment contains: fragment with size of 100 b.p. encoding signal amino acid sequence of Staphylococcus aureus -toxin (CAT) and eight N-terminated amino acid residues of mature CAT; B.garnii flaB gene fragment with size of 500 b.p; nucleotide sequence in flaB gene reading frame encoding amino acid residues of glycin and 6 histidins; pIL-2/21 plasmid BamHI - EcoR1 DNA fragment with internal unique Xmal restriction site, containing -lactamase bla gene and regulatory region of Proteus mirabilis recA gene; unique Xmal, EcoR I, BstEII and BamHI restriction sites. Recombinant plasmid pREB9-H6-C25 DNA providing synthesis of B.garnii OspC protein contains fragment with size of 660 b.p. encoding B.garnii OspC protein; nucleotide sequence in ospC gene reading frame encoding amino acid residues of glycin and 6 histidins; pIL-2/21 plasmid BamHI - EcoR1 DNA fragment with internal unique Xmal restriction site, containing -lactamase bla gene and regulatory region of Proteus mirabilis recA gene; unique Xmal, EcoR I, BstEII and BamHI restriction sites.;EFFECT: high specific diagnosis method with improved accuracy.;2 cl, 2 dwg, 5 ex