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Class 435/116 - Alanine; leucine; isoleucine; serine; homoserine


Subclass of Class 435 - Chemistry: molecular biology and microbiology
Definition: Processes wherein the product synthesized is an acid or
No. of patents: 169
Last issue date: 02/21/2012


1          
NumberTitleIssue Date
8119374Nucleotide sequences of coryneform bacteria coded for proteins participating in L-serine metabolism and method for microbial production of L-serine
This invention relates to the nucleotide sequence of coryneform bacteria coding for proteins which are involved in L-serine metabolism with reduced and switched off L-serine dehydratase activity. The invention also relates to microorganisms used in methods for produ...
02/21/2012
7919285DNA encoding novel enzyme having D-serine synthase activity, method of producing the enzyme and method of producing D-serine by using the same
This invention relates to DNA encoding an enzyme having activity of synthesizing D-serine from formaldehyde and glycine, recombinant DNA constructed by integrating such DNA into a vector, a transformant transformed with the recombinant DNA, and a method for producin...
04/05/2011
7851187Method of producing L-serine derivative and enzyme used therefore
The present invention provides a new method for producing serine derivatives and their optically-activated derivatives in a convenient manner. In the presence of an enzyme, an L-α-amino acid of formula (I): (in the formula...
12/14/2010
7572605Gamma-hydroxybutyrate compositions containing carbohydrate, lipid or amino acid carriers
The present invention provides compositions comprising at least one GHB moiety bonded to at least one physiologically compatible carrier molecule. The compositions can enhance the uptake of the drug, deliver effective therapeutic doses in a time-delayed fashion, or ...
08/11/2009
7432085Method for producing L-amino acid
In a method for producing an L-amino acid by culturing a microorganism having an ability to produce an L-amino acid in a medium to produce and accumulate the L-amino acid in the medium and collecting the L-amino acid from the medium, a Gram-negative bacterium having...
10/07/2008
7432087Method for preparing (2S, 3R, 4S)-4-hydroxyisoleucine and analogues thereof
The invention concerns a method for preparing a-amino acids of general formula (2S-1) wherein: the group R1 represents a hydrogen atom, a group protecting the amino group or a group of formula —COOR2 wherein the group R2 represents a C1-C6 alkyl group, an aryl or ...
10/07/2008
7413884Immunological control of β-amyloid levels in vivo
Disclosed are antibodies which catalyze hydrolysis of β-amyloid. Antibodies generated are characterized by the amide linkage which they hydrolyze. Methods of generating the antibodies by using β-amyloid peptides which incorporate transition state analogs are also ...
08/19/2008
7399617Method for producing an L-amino acid in an bacterium via altering expression levels of target proteins
A bacterium belonging to the genus Escherichia which has an ability to produce an L-amino acid, wherein the ability to produce the L-amino acid is increased by increasing expression of an L-amino acid excretion protein is described. A method for producing the...
07/15/2008
7368276Polynucleotide constructs encoding aspartate kinase, aspartate-semialdehyde dehydrogenase, and dihydrodipicolinate reductase and related constructs, products, and methods
The invention relates to production of lysine, and provides several isolated polynucleotide molecules useful for the production of L-lysine. One such polynucleotide encodes an aspartate kinase (ask), an aspartate-semialdehyde dehydrogenase (asd) and a dihydrodipicol...
05/06/2008
7332309Process for the preparation of L-amino acids using strains of the enterobacteriaceae family which contain an enhanced sucC or sucD gene
The invention relates to a process for the preparation of L-amino acids, in particular L-threonine, in which the following steps are carried out: a) fermentation of microorganisms of the Enterobacteriaceae family which produce the desired L-amino acid and in which a...
02/19/2008
7323321Metabolic engineering of amino acid production
The present invention is directed towards the fermentative production of amino acids, providing microorganisms, methods and processes useful therefor. Microorganisms of the invention are capable of converting glucose to amino acids other than L-isoleucine, L-leucine...
01/29/2008
7311836Process for producing amino acid or salt thereof by column technique and production apparatus thereof
According to the process for producing amino acid or salt thereof in the present invention, in the adsorption step, an amino acid-containing aqueous solution is fed into a pressure tight column so that a free amino acid is adsorbed on a carbonate-type anion exchange...
12/25/2007
7300775Methods for producing α-substituted carboxylic acids using nitrilases and strecker reagents
In accordance with the present invention there are provided methods for producing enantiomerically pure α-substituted carboxylic acids, such as, for example, α-amino acids and α-hydroxy acids, said method comprising combining an aldehyde or ketone with a cyanide ...
11/27/2007
7300777Feedback-resistant pyruvate carboxylase gene from corynebacterium
The present invention relates to a mutated pyruvate carboxylase gene from Corynebacterium. The mutant pyruvate carboxylase gene encodes a pyruvate carboxylase enzyme which is resistant to feedback inhibition from aspartic acid. The present invention also rela...
11/27/2007
7273920Controlling protein levels in eucaryotic organisms
The invention relates to novel compounds comprising a ubiquitination recognition element and a protein binding element. The invention also relates to the use of said compounds for modulating the level and/or activity of a target protein. The compounds are useful for...
09/25/2007
7267967Nucleic acid encoding pyruvate carboxylase from coryneform glutamicum
A pyruvate carboxylase gene having SEQ ID NO:1 as well as an amino acid sequence having SEQ ID NO:2 expressed by the pyruvate carboxylate gene are disclosed. Also disclosed is a method for microbial production of amino acids of the aspartate and/or glutamate family ...
09/11/2007
7247721Materials and methods for binding nucleic acids to surfaces
Surfaces containing high purity silica (silicon dioxide) exhibit high loading potential for nucleic acids. Formulations containing nucleic acids and materials which mask the electrostatic interactions between the nucleic acids and surfaces are disclosed. By m...
07/24/2007
7241600Process for the preparation of L-amino acids using strains of the enterobacteriaceae family
The invention relates to a process for the preparation of L-amino acids, in particular L-threonine. ...
07/10/2007
7238503Process for making fluoroleucine ethyl esters
The instant invention describes a novel reaction that includes spontaneous racemization of an azalactone via enol tautomerization. This racemization results in improved yield and ee over other reactions previously described. ...
07/03/2007
7220572Method for producing L-leucine
There is provided a method for producing L-leucine using bacterium belonging to the genus Escherichia, which produces L-valine, L-isoleucine and L-homoleucine in an amount of less than 1% of that of L-leucine produced due to inactivation of ilvE gene coding f...
05/22/2007
7220561Processes for enhanced production of pantothenate
The present invention features improved methods for producing pantoate and pantothenate utilizing microorganisms having modified pantothenate biosynthetic enzyme activities. In particular, the invention features methods for reducing byproduct formation and increasin...
05/22/2007
7217544Method for the preparation of L-amino acids from D-amino acids
The invention relates to recombinant microorganisms which, in comparison to the starting organism, have a higher concentration or activity of a D-amino acid oxidase, of an L-amino acid dehydrogenase, of an NADH cosubstrate regenerating enzyme and, if necessary, of a...
05/15/2007
7211415Enterobacteriaceae strains over-expressing the yfiD gene for the fermentative production of L-amino acids
The present invention relates to a process for the production of L-amino acids by fermentation of recombinant microorganisms of the Enterobacteriaceae family, wherein a) the yfiD ORF and/or the pflB gene or nucleotide sequences coding for the gene produ...
05/01/2007
7192753Modified threonine deaminase
Nucleic acid sequences, vectors, recombinant host cells, transgenic plants, and methods for their preparation are disclosed. The nucleic acid sequences encode threonine deaminase proteins that catalyze the conversion of threonine to α-ketobutyrate. One or both of t...
03/20/2007
7186532Process for producing D-serine
The present invention relates to: a process for producing D-serine wherein a microbial cell which is modified to have a higher L-serine deaminase activity than Escherichia coli DH5α strain, a culture of said cell, or a processed product thereof is brought in...
03/06/2007
7179623Method of producing amino acids using transformed with sucrose PTS genes
Amino acids such as threonine, homoserine, isoleucine, lysine, valine and tryptophan are produced using a bacterium belonging to the genus Escherichia which has been constructed from a sucrose non-assimilative strain belonging to the genus Escherichia ...
02/20/2007
7160703Nucleotide sequences coding for the PtsI protein
The present invention provides nucleotide sequences from Coryneform bacteria which code for the PtsI protein and a process for the fermentative preparation of amino acids using bacteria in which the ptsI gene is enhanced. ...
01/09/2007
7157251Process for the racemization of N-protected amino acids using racemase
The present invention relates to the processes of racemization and deprotection of special N-protected amino acids in the acylase/racemase system for the total conversion of special N-protected racemic amino acids into optically pure amino acids. ...
01/02/2007
7083952Nucleotide sequences coding for proteins involved in the biosynthesis of L-serine, an improved method for the microbial production of L-serine and a genetically modified microorganism suitable therefor
The present invention relates to nucleotide sequences of coryneform bacteria, coding for proteins involved in the bio-synthesis of L-serine and to methods for the isolation thereof. The invention further relates to an improved method for the production of L-serine. ...
08/01/2006
7067289Method for producing histidine by fermentation with
The present invention provides a method for producing an amino acid selected from the group consisting of L-alanine, L-valine, L-leucine, L-isoleucine, L-methionine, L-phenylalanine, L-proline, glycine, L-serine, L-threonine, L-cysteine, L-tyrosine, L-asparagine, L-...
06/27/2006
7037690Method for producing L-amino acid
In a method for producing an L-amino acid by culturing a microorganism having an ability to produce an L-amino acid in a medium to produce and accumulate the L-amino acid in the medium and collecting the L-amino acid from the medium, a Gram-negative bacterium having...
05/02/2006
7029896Phosphoserine phosphatase gene of coryneform bacteria
The present invention provides a DNA coding for a protein defined in the following (A) or (B) is obtained from Brevibacterium flavum chromosomal DNA library by cloning a DNA fragment that complicates serB deficiency of Escherichia coli as a open readin...
04/18/2006
6960455Methods of making amino acids using E. coli transformed with csc genes
An amino acid such as threonine, homoserine, isoleucine, lysine, valine and tryptophan is produced using a bacterium belonging to the genus Escherichia which has been constructed from sucorse non-assimilative strain belonging to the genus Escherichia a...
11/01/2005
6953677Recombinant L-N-carbamoylase from Arthrobacter aurescens and method of producing L-amino acids therewith
A novel rec-L-N-carbamoylase from Arthrobacter aurescens and its method of use for producing L-amino acids. The recombinantly produced L-carbamoylase is unexpectedly stable, so that an industrial method of producing L-amino acids can be established with it, i...
10/11/2005
6946588Nucleic acid encoding a modified threonine deaminase and methods of use
Nucleic acid sequences, vectors, recombinant host cells, transgenic plants, and methods for their preparation are disclosed. The nucleic acid sequences encode threonine deaminase proteins that catalyze the conversion of threonine to α-ketobutyrate. One or both of t...
09/20/2005
6919190Regulation of carbon assimilation
The present invention provides a method of increasing the productivity of a microorganism by improving the assimilation of carbon dioxide. Specifically, the invention provides a polypeptide having phosphoenolpyruvate carboxylase activity which does not require acety...
07/19/2005
6916637Fermentation process for the preparation of L-amino acids using strains of the family Enterobacteriaceae
The invention relates to a fermentation process for the preparation of L-amino acids, especially L-threonine, in which the following steps are carried out: a) fermentation of the microorganisms of the family Enterobacteriaceae producing the desired L-am...
07/12/2005
6902925Selection media for beauveriolide I or beauveriolide III and process for selectively producing these substances
The present invention is a process for selective production of beauveriolide I substance or beauveriolide III substance, in which a beauveriolide producing microorganism strain FO-6979 or mutant thereof is cultured in a medium for fungi added with specific amino aci...
06/07/2005
6902915Heat-stable D-aminoacylase
The present invention provides a novel D-aminoacylase, as well as method for producing a D-amino acid using the same. In order to achieve the above objective, the present inventors have succeeded in purifying heat-stable D-aminoacylase from microorganisms belonging ...
06/07/2005
6887691DNA coding for protein which confers on bacterium Escherichia coli resistance to L-homoserine, and method for producing L-amino acids
A bacterium which has an ability to produce an amino acid and in which a novel gene (rhtB) coding for a protein having an activity of making a bacterium having the protein L-homoserine-resistant is enhanced, is cultivated in a culture medium to produce and accumulat...
05/03/2005
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