Corynebacterium strain for producing L-tryptophan decreased in
phosphoenolpyruvate carboxylase activity
    31.
    发明授权
    Corynebacterium strain for producing L-tryptophan decreased in phosphoenolpyruvate carboxylase activity 失效
    用于产生L-色氨酸的棒状杆菌菌株磷酸烯醇丙酮酸羧化酶活性降低

    公开(公告)号:US5595906A

    公开(公告)日:1997-01-21

    申请号:US429472

    申请日:1995-04-27

    摘要: The invention relates to a bacterial process for producing L-tryptophan, L-tyrosine or L-phenylalanine. The process utilizes a coryneform glutamic acid-producing bacterium being capable of producing L-tryptophan, L-tyrosine or L-phenylalanine and also decreased or lacked in phosphoenolpyruvate carboxylase activity. The mutant strain is then cultured in order to accumulate the amino acid in a medium and the amino acid is recovered therefrom.

    摘要翻译: 本发明涉及生产L-色氨酸,L-酪氨酸或L-苯丙氨酸的细菌方法。 该方法利用产生L-色氨酸,L-酪氨酸或L-苯丙氨酸的棒状谷氨酸生产细菌,并且还降低或缺乏磷酸烯醇丙酮酸羧化酶活性。 然后培养突变菌株以将氨基酸在培养基中积累,并从中回收氨基酸。

    Process for producing L-tryptophan
    32.
    发明授权
    Process for producing L-tryptophan 失效
    生产L-色氨酸的方法

    公开(公告)号:US5563052A

    公开(公告)日:1996-10-08

    申请号:US245823

    申请日:1994-05-18

    CPC分类号: C12N15/52 C12P13/227

    摘要: L-tryptophan is produced by constructing a recombinant DNA composed of a vector DNA and DNA fragments bearing all of genetic information relating to the synthesis of DS, AS, PRT, PRAI, InGPS and TS, introducing the recombinant DNA in a microorganism belonging to the genus Corynebacterium or Brevibacterium, culturing the microorganism in a medium, and recovering L-tryptophan accumulated in the culture.

    摘要翻译: 通过构建由载体DNA构成的重组DNA和具有与DS,AS,PRT,PRAI,InGPS和TS的合成有关的所有遗传信息的DNA片段,产生L-色氨酸,将重组DNA引入属于 棒状杆菌属或短杆菌属,在培养基中培养微生物,并回收在培养物中积累的L-色氨酸。

    Process for producing L-valine
    33.
    发明授权
    Process for producing L-valine 失效
    生产L-缬氨酸的方法

    公开(公告)号:US5521074A

    公开(公告)日:1996-05-28

    申请号:US450079

    申请日:1995-05-25

    IPC分类号: C12P13/08 C12N1/20

    摘要: There is provided a process for producing L-valine which comprises cultivating, in a medium, a microorganism which belongs to the genus Corynebacterium or Brevibacterium, which exhibits a) an ability to produce L-valine, b) resistance to L-valine in a medium containing acetic acid as a sole carbon source, and c) sensitivity to a pyruvic acid analog in a medium containing glucose as a sole carbon source, until L-valine is accumulated in the culture broth, and recovering L-valine therefrom.

    摘要翻译: 提供了一种生产L-缬氨酸的方法,其包括在培养基中培养属于棒杆菌属或短杆菌属的微生物,其显示出a)产生L-缬氨酸的能力,b)在L-缬氨酸中对L-缬氨酸的抗性 含有乙酸作为唯一碳源的培养基,以及c)在含有葡萄糖作为唯一碳源的培养基中对丙酮酸类似物的敏感性,直到L-缬氨酸在培养液中积聚,并从其中回收L-缬氨酸。

    Process for producing L-tryptophan
    34.
    发明授权
    Process for producing L-tryptophan 失效
    生产L-色氨酸的方法

    公开(公告)号:US5447857A

    公开(公告)日:1995-09-05

    申请号:US147541

    申请日:1993-11-05

    CPC分类号: C12P13/227 C12N15/52

    摘要: L-tryptophan is produced by constructing a recombinant DNA composed of a vector DNA and DNA fragments bearing all of genetic information relating to the synthesis of DS, AS, PRT, PRAI, InGPS, TS and PGDH, introducing the recombinant DNA into a microorganism belonging to the genus Corynebacterium or Brevibacterium, culturing the microorganism in a medium, and recovering L-tryptophan accumulated in the culture.

    摘要翻译: 通过构建由载体DNA构成的重组DNA和具有与DS,AS,PRT,PRAI,InGPS,TS和PGDH的合成有关的所有遗传信息的DNA片段,将重组DNA引入到属于微生物的微生物中来产生L-色氨酸 到棒状杆菌属或短杆菌属,在培养基中培养微生物,并回收在培养物中积累的L-色氨酸。