摘要:
A method of producing useful substances which comprising propagating in cultured cells or in a host a recombinant Bombyx mori nuclear polyhedrosis virus (BmNPV) DNA is disclosed. The BmNPV DNA is produced by recombination with a double-stranded DNA containing (i) a 5'- upstream BmNPV DNA fragment originally occurring upstream from the structural gene coding for the production of polyhedral protein and also including the promotor region for the structural gene, (ii) a translational start codon and (iii) a gene coding for the production of a useful substance exogenous to the virus, with or without (iv) a 3'-downstream BmNPV DNA fragment originally occurring downstream from the structural gene coding for the production of polyhedral protein.
摘要:
Recombinant Bombyx mon nuclear polyhedrosis viruses having, in the polyhedral protein-encoding structural gene portion of the Bombyx mon nuclear polyhedrosis virus DNA (BmNPV DNA), a structural gene for a desired protein as joined to the whole of or a part of the polyhedral protein-encoding structural gene with or without interposition of a linker base sequence are provided. By propagating the above viruses in silkworm-derived cells or silkworms, fused proteins of a desired protein and the whole of or a part of the polyhedral protein as joined together with or without interposition of a linking amino acid or peptide are produced. The desired proteins can be obtained from the fused proteins by cleavage or decomposition at the linking site.
摘要:
A method of producing useful substances which comprising propagating in cultured cells or in a host a recombinant Bombyx mori nuclear polyhedrosis virus (BmNPV) DNA is disclosed. The BmNPV DNA is produced by recombination with a double-stranded DNA containing (i) a 5'- upstream BmNPV DNA fragment originally occurring upstream from the structural gene coding for the production of polyhedral protein and also including the promotor region for the structural gene, (ii) a translational start codon and (iii) a gene coding for the production of a useful substance exogenous to the virus, with or without (iv) a 3'-downstream BmNPV DNA fragment originally occurring downstream from the structural gene coding for the production of polyhedral protein.