摘要:
Provided is a microorganism that is able to produce 2-phenylethanol at a high concentration, and a method of efficiently producing 2-phenylethanol by using a saccharide as a raw material. Provided is a coryneform bacterium transformant in which a shikimate pathway is activated, and further, a gene that encodes an enzyme having phenylpyruvate decarboxylase activity is introduced in such a manner that the gene can be expressed. Also provided is a 2-phenylethanol producing method that includes causing the coryneform bacterium transformant according to the present disclosure to react in water containing a saccharide.
摘要:
A coryneform bacterium transformant engineered by the following (A) to (D): (A) enhancement of 3-deoxy-D-arabino-heptulosonate-7-phosphate (DAHP) synthase activity; (B) prevention, inhibition, or reduction of intracellular sugar uptake mediated by phosphotransferase system (PTS); (C) enhancement of intracellular sugar uptake activity mediated by a sugar transporter different from phosphotransferase system and enhancement of glucokinase activity; and (D) enhancement of glyceraldehyde-3-phosphate dehydrogenase (GAPDH) activity is capable of efficiently producing shikimic acid or the like from a sugar.
摘要:
Provided is a transformant of a microorganism that has improved catechol productivity. Provided in one aspect is a transformant of a coryneform bacterium that is obtained by introducing, into the coryneform bacterium as a host, a gene selected from the group consisting of (1) a decarboxylase gene ubiD of Lactobacillus rhamnosus ; (2) an ortholog of the gene (1) in at least one of the genus Lactobacillus, the genus Bacillus, the genus Enterobacter, the genus Escherichia, the genus Paenibacillus, the genus Citrobacter, or the genus Pantoea ; and (3) a gene in which an enzyme that has an amino acid sequence identity of 70 % or more with an amino acid sequence of an enzyme encoded by the gene (1) or (2), and that has a decarboxylation activity, is encoded Provided is a transformant of a coryneform bacterium wherein mutations are introduced into a catechol 1,2-dioxygenase gene catA, and a protocatechuic acid dehydrogenase gene pcaHG in the coryneform bacterium as a host; and functions of enzymes encoded by the two genes are degraded or lost.