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:
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.