Method for producing L-tryptophan by fermentation
    5.
    发明授权
    Method for producing L-tryptophan by fermentation 失效
    通过发酵生产L-色氨酸的方法

    公开(公告)号:US5034318A

    公开(公告)日:1991-07-23

    申请号:US501329

    申请日:1990-03-22

    摘要: A method for producing L-tryptophan comprising culturing coryneform glutamic acid-producing bacteria transformed with an expression vector capable of replicating and expressing an operably linked anthranilic acid phosphoribosyl transferase gene isolated from a brevibacterium glutamic acid-producing bacterium, growing the transformants in culture medium allowing for the production of L-tryptophan and recovering the L-tryptophan accumulated in the culture medium.

    摘要翻译: 一种L-色氨酸的制造方法,其特征在于,含有培养产生棒状谷氨酸的细菌转化的表达载体,该表达载体能够复制并表达从产生微生物谷氨酸的细菌分离的可操作地连接的邻氨基苯甲酸磷酸核糖转移酶基因, 用于生产L-色氨酸并回收在培养基中积累的L-色氨酸。

    Method for producing L-amino acids
    10.
    发明授权
    Method for producing L-amino acids 失效
    生产L-氨基酸的方法

    公开(公告)号:US4980285A

    公开(公告)日:1990-12-25

    申请号:US412562

    申请日:1989-09-25

    摘要: A method for producing an L-amino acid, which comprises inserting a gene which codes for an enzyme which is utilized on the route of biosynthesis of an L-amino acid product into one of at least two plasmid vectors which have compatible replicating origins different from each other, inserting a second gene which codes for an enzyme different from the first enzyme on the route of biosynthesis of the L-amino acid into a second of the plasmid vectors; introducing the thus obtained recombinant plasmids into a strain of Coryneform bacteria; and culturing the thus transformed strain which is capable of producing the L-amino acid, said two enzymes being highly rate determining enzymes for the biosynthesis of L-amino acid.

    摘要翻译: 一种L-氨基酸的制造方法,其特征在于,将在L-氨基酸产物的生物合成途径中使用的酶编码的基因插入至少两个具有不同于其的复制起点的质粒载体之一 将在L-氨基酸生物合成途径上编码不同于第一酶的酶的第二基因插入第二质粒载体; 将如此获得的重组质粒导入棒状细菌菌株; 并培养能够产生L-氨基酸的如此转化的菌株,所述两种酶是用于生物合成L-氨基酸的高速率决定酶。