Method for producing L-tryptophan by fermentation
    6.
    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-isoleucine by fermentation
    10.
    发明授权
    Method for producing L-isoleucine by fermentation 失效
    通过发酵生产L-异亮氨酸的方法

    公开(公告)号:US4442208A

    公开(公告)日:1984-04-10

    申请号:US392145

    申请日:1982-06-25

    CPC分类号: C12P13/06 C12N15/52 C12N15/77

    摘要: L-isoleucine is produced by a fermentation process comprising aerobically culturing in an aqueous culture medium an L-isoleucine producing microorganism obtained by isolating a transformed strain resistant to .alpha.-amino-.beta.-hydroxy valeric acid prepared by incorporating into a recipient strain of the genus Brevibacterium orCorynebacterium, which is sensitive to .alpha.-amino-.beta.-hydroxy valeric acid, a plasmid DNA obtained from a microorganism of the genus Brevibacterium or Corynebacterium into which has been inserted a fragment of chromosomal DNA derived from a DNA-donor strain of the genus Brevibacterium or Corynebacterium which is resistant to .alpha.-amino-.beta.-hydroxy valeric acid; and recovering L-isoleucine which accumulates in the resulting culture liquid.

    摘要翻译: 通过发酵方法产生L-异亮氨酸,所述发酵方法包括在水性培养基中有氧培养产生的L-异亮氨酸微生物,其通过分离通过掺入到所述属的受体菌株中而制备的对α-氨基-β-羟基戊酸有抗性的转化菌株 对α-氨基-β-羟基戊酸敏感的短杆菌或棒状杆菌,从短杆菌属或棒状杆菌属的微生物获得的质粒DNA,其中插入了源自该属的DNA供体菌株的染色体DNA片段 对α-氨基-β-羟基戊酸有抗性的短杆菌属或棒状杆菌; 并回收在所得培养液中积聚的L-异亮氨酸。