Recombinant DNA and expression vector for the repressible and inducible
expression of foreign genes
    5.
    发明授权
    Recombinant DNA and expression vector for the repressible and inducible expression of foreign genes 失效
    重组DNA和表达载体,用于外源基因的抑制和诱导表达

    公开(公告)号:US5830720A

    公开(公告)日:1998-11-03

    申请号:US386198

    申请日:1995-02-09

    CPC分类号: C12N15/70

    摘要: The recombinant DNA according to the present invention contains a regulator region which is different from the pfl gene; a promoter region upstream from the gene which contains a -35/-10 promoter sequence; a regulator region upstream from the promoter region which contains a sequence (I) 5'-GAGATATGATCTATATCAATTTC-3' or a 23 base pair sequence which is at least 80% identical to positions 6-10 and 15-19 of said sequence (I) but not having C at position 8 and/or G at position 17. An expression vector according to the present invention contains a recombinant DNA according to the present invention ligated into a suitable vector molecule and methods are also described for expression the DNA.

    摘要翻译: 根据本发明的重组DNA含有与pfl基因不同的调节区; 该基因上游的启动子区含有-35 / -10启动子序列; 包含序列(I)5'-GAGATATGATCTATATCAATTTC-3'或与所述序列(I)的6-10和15-19位置至少80%相同的23个碱基对序列的启动子区域上游的调节区) 但在位置8处不具有C和/或在位置17处具有G。根据本发明的表达载体含有连接到合适的载体分子中的本发明的重组DNA,还描述了用于表达DNA的方法。

    DNA for the repressible and inducible expression of foreign genes
    7.
    发明授权
    DNA for the repressible and inducible expression of foreign genes 失效
    用于抑制和诱导外源基因表达的DNA

    公开(公告)号:US4963482A

    公开(公告)日:1990-10-16

    申请号:US175780

    申请日:1988-03-31

    摘要: The present invention provides a recombinant DNA, wherein it contains the consensus sequence: ##STR1## and a promoter which has the DNA sequence GGN.sub.10 GC. The present invention also provides a process for the isolation of this recombinant DNA, wherein a DNA sequence containing the consensus sequence is identified from a gene bank of a micro-organism, which contains a gene which is repressible by oxygen and inducible by formate under anaerobic conditions, isolated and combined with an appropriate promotor according to known methods.This recombinant gene can be used for the inducible and repressible expression of a foreign gene by bringing about the induction by formate under anaerobic conditions and the repression by oxygen.

    摘要翻译: 本发明提供重组DNA,其中含有共有序列:IMAGE和具有DNA序列GGN10GC的启动子。 本发明还提供了分离该重组DNA的方法,其中从微生物的基因库鉴定含有共有序列的DNA序列,该微生物的基因库含有可被氧气阻抑的基因,并且在厌氧条件下由甲酸诱导 条件,根据已知方法分离并与合适的启动子组合。 该重组基因可用于通过在厌氧条件下通过甲酸诱导和通过氧的抑制来诱导和阻抑外源基因的表达。