摘要:
L-arginine is produced using a bacterium belonging to the genus Escherichia harboring a mutant N-acetylglutamate synthase in which the amino acid sequence corresponding to positions from 15 to 19 in a wild type N-acetylglutamate synthase is replaced with any one of amino acid sequences of SEQ ID NOS: 1 to 4, and feedback inhibition by L-arginine is desensitized.
摘要翻译:使用属于埃希氏菌属的细菌产生L-精氨酸,所述细菌携带突变体N-乙酰谷氨酸合成酶,其中野生型N-乙酰谷氨酸合成酶中相应于15至19位的氨基酸序列被氨基酸序列 的SEQ ID NO:1至4,并且L-精氨酸的反馈抑制被脱敏。
摘要:
L-arginine, citrulline and pyrimidine derivatives including orotic acid, uridine, uridine 5′-monophosphate (UMP), cytidine and cytidine. 5′-monophosphate (CMP) are produced using a bacterium belonging to the genus Escherichia harboring a mutant carbamoylphosphate synthetase in which the amino acid sequence corresponding to positions from 947 to 951 in a wild type carbamoylphosphate synthetase is replaced with any one of amino acid sequences of SEQ ID NOS: 1 to 9, and feedback inhibition by uridine 5′-monophosphate in the bacterium is desensitized.
摘要翻译:L-精氨酸,瓜氨酸和嘧啶衍生物,包括乳清酸,尿苷,尿苷5'-单磷酸(UMP),胞苷和胞苷。 使用属于突变型氨基甲酰磷酸合成酶的属于埃希氏杆菌属的细菌产生5'-单磷酸(CMP),其中野生型氨基甲酰磷酸合成酶中相当于947〜951位置的氨基酸序列被氨基酸序列 的SEQ ID NO:1至9,并且细菌中尿苷5'-单磷酸的反馈抑制被脱敏。
摘要:
Arginine can be efficiently produced by cultivating Escherichia coli which has an ability to produce arginine and an ability to utilize acetate in a culture medium to produce and accumulate arginine in the medium, and collecting arginine from the medium.
摘要:
A method is provided for producing L-amino acid, such as L-arginine using a bacterium of Enterobacteriaceae family, particularly a bacterium belonging the genus Escherichia, with an inactivated nir operon.
摘要:
A method is disclosed for producing L-threonine using bacterium belonging to the genus Escherichia, wherein the bacterium has L-threonine productivity and has been modified to have enhanced expression of one or more of the following genes: glk, pgi, pfkA,, tpiA, gapA, pgk, eno, and pykA, which code for enzymes of glycolytic pathway.
摘要:
There is disclosed a method for producing an L-amino acid, for example L-threonine, L-lysine, L-histidine, L-phenylalanine, L-arginine, L-tryptophan, or L-glutamic acid, using a bacterium of the Enterobacteriaceae family, wherein the bacterium has been modified to enhance an activity of N-acetylglucosamine permease encoded by the nagE gene.