摘要:
A transformant obtainable by introducing one or more of the following DNAs (a), (b), and (c) into a coryneform bacterium as a host. (a) A DNA which encodes acetohydroxy acid synthase derived from Corynebacterium glutamicum and which has a mutation changing the glycine at position 156 to glutamic acid (G156E) in an amino acid sequence encoded by the DNA, or an analog thereof. (b) A DNA which encodes acetohydroxy acid isomeroreductase derived from Corynebacterium glutamicum and which has mutations changing the serine at position 34 to glycine (S34G), the leucine at position 48 to glutamic acid (L48E), and the arginine at position 49 to phenylalanine (R49F) in an amino acid sequence encoded by the DNA, or an analog thereof. (c) A DNA which encodes leucine dehydrogenase derived from Lysinibacillus sphaericus, or an analog thereof.
摘要:
A transformant capable of producing isopropanol which is constructed by transferring the following genes (a) to (d) into an aerobic bacterium or a facultative anaerobic bacterium: (a) a foreign gene which encodes an enzyme having acetyl-CoA acetyltransferase activity; (b) a foreign gene which encodes an enzyme having acetoacetyl CoA:acetate CoA-transferase activity; (c) a foreign gene which encodes an enzyme having acetoacetate decarboxylase activity; and (d) a foreign gene which encodes an enzyme having isopropanol dehydrogenase activity.
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 Corynebacterium glutamicum transformant having the capability of producing isobutanol and the following genes (1) to (5): (1) a gene which encodes an enzyme having acetohydroxy acid synthase activity; (2) a gene which encodes an enzyme having acetohydroxy acid isomeroreductase activity; (3) a gene which encodes an enzyme having dihydroxy acid dehydratase activity; (4) a gene which encodes an enzyme having 2-keto acid decarboxylase activity; and (5) a gene which encodes an enzyme having alcohol dehydrogenase activity,
at least one of the genes being endogenous, and at least one of the genes being exogenous, efficiently produces isobutanol.
摘要:
A coryneform bacterium transformant prepared by transferring an exogenous gene which encodes a protein having a sugar transporter function into a coryneform bacterium capable of utilizing D-xylose.
摘要:
A transformant capable of producing isopropanol which is constructed by transferring the following genes (a) to (d) into a coryneform bacterium: (a) an exogenous gene which encodes an enzyme having acetyl-CoA acetyltransferase activity; (b) an exogenous gene which encodes an enzyme having acetoacetyl CoA:acetate CoA-transferase activity; (c) an exogenous gene which encodes an enzyme having acetoacetate decarboxylase activity; and (d) an exogenous gene which encodes an enzyme having isopropanol dehydrogenase activity.
摘要:
The present invention relates to a method of inducing expression of a promoter function of various genes in a Coryneform bacterium related to function exertion, in order to exert the function of a Coryneform bacterium highly and effectively under an anaerobic condition, for producing an organic compound useful under an anaerobic condition, more particularly, provides a method of enhancing and/or suppressing the promoter function related to various genes, for the purpose of highly and effectively expressing various protein genes necessary for production of an objective substance, and suppressing expression of an unnecessary protein gene. The DNA fragment of the present invention is useful as a primer which is introduced into a transformed Coryneform bacterium producing a useful substance such as lactic acid and succinic acid highly and at a high efficiency.
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.
摘要:
Provided is an aniline-producing transformant constructed by introducing a gene which encodes an enzyme having aminobenzoate decarboxylase activity into a coryneform bacterium as a host. Also provided is a process for producing aniline, which comprises a step of allowing the transformant to react in a reaction mixture containing aminobenzoic acid, an ester thereof, and/or a salt thereof under reducing conditions, and a step of recovering aniline from the reaction mixture.