摘要:
A recombinant vector capable of replicating in Gram positive bacteria and containing: a) a nucleotide concatenation I of Bacillus thuringiensis with a size of about 2.6 kb between sites BalI-HpaI, or any fragment included in said concatenation as long as its allows replication of the recombinant vector when under the control of a functional promoter in Gram positive bacteria, or any sequence which hybridizes with the complementary sequence of concatenation I or the above-mentioned fragment under highly stringent conditions, and b) at least one DNA sequence of interest inserted in phase with the above-mentioned concatenation.
摘要:
The invention relates to sequences of nucleotides of bacteria, particularly Gram bacteria such as bacteria of the Bacillus type and more particularly sequences of nucleotides of the gene CryIIIA for the control of the expression of DNA sequences in a cellular host. The invention relates particularly to an expression system comprising a DNA sequence susceptible of being involved in the control of the expression of a coding sequence of nucleotides. Said DNA sequence comprises a promoter, as well as a sequence of nucleotides called "downstream region", situated between the promoter and the coding sequence of the gene to be expressed, and susceptible of acting at the post-transcriptional level during the expression of the gene. Preferably, the downstream region comprises a nucleotide sequence S2 comprising an essentially complementary region at the extremity 3' of the RNA 16S of the ribosomes of Bacillus type bacteria.
摘要:
A nucleotide sequence coding for at least one part of the terminal N region of a polypeptide which exercises a specific toxic effect on Lepidoptera of the Noctuidae family, preferably on S.littoralis, is characterized by its capacity for hybridisation with a gene capable of expressing a polypeptide exercising a toxic effect on S.littoralis larvae.
摘要:
The present invention relates particularly to a strain of Bacillus thuringiensis characterized in that it expresses the gene sigma E ( sigma E) and does not sporulate at all or litte sporulates or does not produce any viable spores. The invention also relates to a pesticide composition containing said strain of Bacillus thuringiensis.
摘要:
The invention relates to sequences of nucleotides of bacteria, particularly Gram+ bacteria such as bacteria of the Bacillus type and more particularly sequences of nucleotides of the gene CryIIIA for the control of the expression of DNA sequences in a cellular host. The invention relates particularly to an expression system comprising a DNA sequence susceptible of being involved in the control of the expression of a coding sequence of nucleotides. Said DNA sequence comprises a promoter, as well as a sequence of nucleotides called 'downstream region', situated between the promoter and the coding sequence of the gene to be expressed, and susceptible of acting at the post-transcriptional level during the expression of the gene. Preferably, the downstream region comprises a nucleotide sequence S2 comprising an essentially complementary region at the extremity 3' of the RNA 16S of the ribosomes of Bacillus type bacteria.