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147 results about "Acetyl coenzyme" patented technology

Acetyl Coenzyme A. Acetyl coenzyme a. coenzyme a (coa, CoASH, or HSCoA) is a coenzyme, notable for its role in the synthesis and oxidization of fatty acids, and the oxidation of pyruvate in the citric Acid Cycle. It is adapted from β-mercaptoethylamine, panthothenate and adenosine Triphosphate.

Lidaldanediol pyrophosphate synthase and engineered yeast for producing sclareol

ActiveCN121450628AFungiTransferasesTranscription RepressorPyrophosphate
The invention belongs to the field of biosynthesis, and in particular relates to LBD (Levandanenediol Pyrophosphate) synthase and engineered yeast for producing sclareol. In order to solve the problem that in the prior art, the sclareol biosynthesis yield is generally low, LSLPPs mutant containing at least one mutation of D730L, D374L, N674L or G379M is obtained by performing mutation and optimization on LSLPPs pyrophosphate synthase, and the mutant is used for sclareol synthesis. Meanwhile, in order to solve the problem of genetic instability caused by free plasmid expression of part of saccharomyces cerevisiae strains, a sclareol synthesis pathway is constructed in a yeast genome, and meanwhile, an acetyl coenzyme A synthesis pathway, an MVA pathway and a sclareol synthesis pathway are enhanced; chassis bacteria for synthesizing sclareol are modified in a manner of knocking out part of transcription inhibition factors, and the yield of a 5L fermentation tank reaches 26.11 g / L and is greatly improved compared with the prior art.
Owner:SICHUAN INGIA BIOSYNTHETIC CO LTD

Sclareol synthase and engineered yeast for producing sclareol

ActiveCN121450629AFungiTransferasesTranscription RepressorMutant
The invention belongs to the field of biosynthesis, and particularly relates to sclareol synthase and engineered yeast for producing sclareol. In order to solve the problem that in the prior art, sclareol biosynthesis yield is generally low, sclareol synthase is mutated and optimized, an SsScs mutant containing at least one mutation of Y491F, G307L or N269F is obtained, and the mutant is used for sclareol synthesis. Meanwhile, in order to solve the problem of genetic instability caused by free plasmid expression of part of saccharomyces cerevisiae strains, a sclareol synthesis pathway is constructed in a yeast genome, and meanwhile, an acetyl coenzyme A synthesis pathway, an MVA pathway and a sclareol synthesis pathway are enhanced; chassis bacteria for synthesizing sclareol are modified in a manner of knocking out part of transcription inhibition factors, and the yield of a 5L fermentation tank reaches 21.13 g / L and is greatly improved compared with the prior art.
Owner:SICHUAN INGIA BIOSYNTHETIC CO LTD

Pichia pastoris engineering bacterium for synthesizing bakuchiol from de novo by converting methanol as well as construction and application of pichia pastoris engineering bacterium

The invention discloses a pichia pastoris engineering bacterium for synthesizing bakuchiol from de novo by converting methanol as well as construction and application of the pichia pastoris engineering bacterium. A heterologous p-coumaric acid synthesis pathway is introduced to neutral sites of different chromosomes of pichia pastoris, a high-yield p-coumaric acid strain is obtained through gene knockout, overexpression or heterologous expression of tyrosine and phenylalanine synthesis pathway key genes of a shikimic acid pathway, a heterologous bakuchiol biosynthesis pathway is introduced on the basis, and a high-yield p-coumaric acid strain is obtained. After overexpression of bakuchiol synthetase, endogenous overexpression or heterologous expression of MVA pathway key genes and exogenous acetyl coenzyme A supply pathway genes, methanol concentration optimization and bacterial strain His4 gene supplementation, the yield of bakuchiol is effectively increased to 91.2 mg / L and is increased by 59.8 times compared with that of an initial bacterial strain, and the yield of bakuchiol in a 15L fermentation tank reaches 692.8 mg / L. The method has the characteristics of high conversion efficiency, low production cost, convenience in preparation, wide industrial application prospect and the like.
Owner:SOUTH CHINA UNIV OF TECH +1

L-arginine production strain as well as construction method and application thereof

The invention provides an L-arginine production strain and a construction method and application thereof, corynebacterium glutamicum AJC is modified by a metabolic engineering method to obtain the L-arginine production strain, the synthesis path of arginine is optimized, and a carbon source efficiently flows to arginine by means of promoter replacement, multi-copy and the like; by introducing an exogenous gene pyrABE949 *, the supply of a precursor substance carbamyl phosphate is enhanced; by introducing an exogenous gene pntAB, a new direction is provided for supply of coenzyme NADPH, and a large amount of reducing power is provided for synthesis of arginine; an exogenous gene fxpk is introduced, an NOG system is constructed, an acetyl coenzyme A pool is enriched, a large number of acetyl coenzyme A precursors are provided, and the engineering bacterium has the characteristics of high yield and stability and has good industrial application value in the aspect of fermentation production of L-arginine.
Owner:TIANJIN UNIV OF SCI & TECH +1

Yarrowia lipolytica with high yield of beta-carotene as well as construction method and application of yarrowia lipolytica

PendingCN120944727AFungiTransferasesLycopersenePhytoene synthesis
The invention discloses yarrowia lipolytica with high yield of beta-carotene as well as a construction method and application of the yarrowia lipolytica. According to the yarrowia lipolytica engineering bacterium, geranyl diphosphate synthase gene xdGPS, phytoene dehydrogenase gene CarB, phytoene cyclization / phytoene synthesis bifunctional enzyme mutant gene GarRPY27R, acetyl-coenzyme A synthetase mutant gene ACSL641P and pyruvate ferredoxin oxidoreductase gene nifJ are integrated and expressed on a chromosome, and the yarrowia lipolytica engineering bacterium is obtained. Meanwhile, a 3-hydroxy-3-methylglutaryl CoA reductase gene HMGR (3-hydroxy-3-methylglutaryl CoA reductase) derived from the yarrowia lipolytica strain is subjected to overexpression; the yield of the beta-carotene is increased to 13.186 g / L, and the production efficiency is 0.14 g / L / h.
Owner:JIANGNAN UNIV

Recombinant yarrowia lipolytica with high yield of palmitoleic acid, construction method and application thereof

ActiveCN117736895BFungiHydrolasesPeroxisomal biogenesisδ9 desaturase
The application provides a recombinant Yarrowia lipolytica capable of producing palmitoleic acid at a high yield, a construction method and application thereof, and belongs to the technical field of bioengineering. Yarrowia lipolytica The recombinant Yarrowia lipolytica is obtained by knocking out peroxisome biogenesis factor 10 and triacylglycerol lipase 4 in the genome of Yarrowia lipolytica and inserting an acetyl-CoA carboxylase, a Δ9 desaturase, an acetyl-CoA diacylglycerol acyltransferase, a glycerol-3-phosphate acyltransferase, a lysophosphatidylcholine acyltransferase and a phosphatidylcholine:diacylglycerol acyltransferase gene expression cassette. Experiment proves that the recombinant Yarrowia lipolytica can efficiently ferment and produce palmitoleic acid, and realizes efficient synthesis of the natural product palmitoleic acid from plants in Yarrowia lipolytica.
Owner:NANJING TECH UNIV

Means and methods for producing isobutene from acetyl-CoA

Described is a recombinant organism or microorganism which is capable of enzymatically converting acetyl-CoA into isobutene, (A) wherein in said organism or microorganism: (i) acetyl-CoA is enzymatically converted into acetoacetyl-CoA, (ii) acetoacetyl-CoA is enzymatically converted into 3-hydroxy-3-methylglutaryl-CoA, (iii) 3-hydroxy-3-methylglutaryl-CoA is enzymatically converted into 3-methylglutaconyl-CoA, (iv) 3-methylglutaconyl-CoA is enzymatically converted into 3-methylcrotonyl-CoA, and (v) wherein said 3-methylcrotonyl-CoA is converted into isobutene by: (a) enzymatically converting 3-methylcrotonyl-CoA into 3-methylcrotonic acid which is then further enzymatically converted into said isobutene; or (b) enzymatically converting 3-methylcrotonyl-CoA into 3-hydroxy-3-methylbutyryl-CoA which is then further enzymatically converted into 3-hydroxy-3-methylbutyric acid which is then further enzymatically converted into 3-phosphonoxy-3-methylbutyric acid which is then further enzymatically converted into said isobutene; (B) wherein said recombinant organism or microorganism has an increased pool of coenzyme A (CoA) over the organism or microorganism from which it is derived due to: (i) an increased uptake of pantothenate; and / or (ii) an increased conversion of pantothenate into CoA. Moreover, described is the use of such a recombinant organism or microorganism for the production of isobutene. Further, described is a method for the production of isobutene by culturing such a recombinant organism or microorganism in a suitable culture medium under suitable conditions.
Owner:GLOBAL BIOENERGIES

Methods for stabilizing production of acetyl-coenzyme a derived compounds

The present disclosure relates to the use of a switch for the production of heterologous non-catabolic compounds in microbial host cells. In one aspect, provided herein are genetically modified microorganisms that produce non-catabolic compounds more stably when serially cultured under aerobic conditions followed by microaerobic conditions, and methods of producing non-catabolic compounds by culturing the genetically modified microbes under such culture conditions. In another aspect, provided herein are genetically modified microorganisms that produce non-catabolic compounds more stably when serially cultured in the presence of maltose followed by the reduction or absence of maltose, and methods of producing non-catabolic compounds by culturing the genetically modified microbes under such culture conditions.
Owner:TOTAL MARKETING SERVICES SA

Strain for efficiently synthesizing pha from acetic acid and application thereof

This invention relates to a recombinant Halomonas strain that produces polyhydroxyalkanoates (PHA) by overexpressing endogenous enzymes encoding ADP-dependent acetyl-CoA synthase (ADP-ACS). acd This gene not only enhances the recombinant bacterium's tolerance to acetic acid but also enables it to efficiently convert acetic acid or acetate substrates into acetyl-CoA, thereby participating in the tricarboxylic acid cycle (TCA cycle) and the synthesis of PHA. The present invention also relates to a method for producing PHA using the aforementioned recombinant Halomonas bacterium employing a pH-stat strategy.
Owner:BEIJING PHABUILDER BIOTECHNOLOGY CO LTD

Increased production of acetyl-coenzyme a and derived products in yeast

PCT designated stageWO2026133258A1FungiHydrolasesHeterologousCoenzyme A biosynthesis
The present disclosure describes a recombinant yeast host cell having a first engineered metabolic pathway to convert fructose-6-phosphate (F-6-P) into acetyl-coenzyme A. The first engineered metabolic pathway comprises: a genetic modification for expressing a heterologous phosphoketolase capable of converting fructose-6-phosphate into erythrose-4-phosphate, and at least one genetic modification for decreasing native 6- phosphofructo-2-kinase activity classified under Enzyme Commission No. 2.7.1.105. Optionally, the recombinant yeast host cell comprises a second engineered metabolic pathway for convert acetyl-coA into a fermentation product. The present disclosure further describes a process for making a fermentation product. The process comprises contacting the recombinant yeast host cell described herein with a carbohydrate source under a condition allowing the conversion of at least a part of the carbohydrate into a fermentation product.
Owner:DANSTAR FERMENT AG

Microorganisms and methods for improving product yields on methanol using acetyl-CoA synthesis

The invention provides non-naturally occurring microbial organisms containing enzymatic pathways and / or metabolic modifications for enhancing carbon flux through acetyl-CoA. In some embodiments, the microbial organisms of the invention having such pathways also include pathways for generating reducing equivalents, formaldehyde fixation and / or formate assimilation. The enhanced carbon flux through acetyl-CoA, in combination with pathways for generating reducing equivalents, formaldehyde fixation and / or formate assimilation can, in some embodiments, be used for production of a bioderived compound. Accordingly, in some embodiments, the microbial organisms of the invention can include a pathway capable of producing a bioderived compound of the invention. The invention still further provides a bioderived compound produced by a microbial organism of the invention, culture medium having the bioderived compound of the invention, compositions having the bioderived compound of the invention, a biobased product comprising the bioderived compound of the invention, and a process for producing a bioderived compound of the invention.
Owner:GENOMATICA INC

Genetically engineered bacterium for synthesizing N-acetyl blue as well as construction method and application of genetically engineered bacterium

The invention discloses a genetically engineered bacterium for synthesizing N-acetyl blue as well as a construction method and application of the genetically engineered bacterium. The genetically engineered bacterium is prepared by knocking out a lactic dehydrogenase gene ldh and inserting a phosphoketolase gene xfpK on a knockout site, knocking out a pyruvate oxidase gene poxB and inserting a phosphate transacetylase gene pta on a knockout site of a microorganism for producing N-acetyl blue, and knocking out an aconitase inhibition factor gene acnR, inserting a glutamate dehydrogenase gene gdhA on a knockout site, knocking out a glutamine synthetase adenylation transferase gene glnE, and inserting an alpha-ketoglutarate dehydrogenase inhibition factor gene odhI on a knockout site to obtain the strain. According to the method, the supply of the precursor acetyl coenzyme A is enhanced by introducing a non-oxidative glycolysis pathway, the pH dynamic regulation system balances the metabolic flux, and the double breakthrough of the yield and the carbon recovery rate of the N-acetyl blue is realized by combining a two-stage fermentation process.
Owner:VERTEXYN (NANJING) BIOWORKS CO LTD

Method for the generation of an FCRN expressing cell by targeted integration of multiple expression cassettes in a defined organization

Herein is reported a method for producing C-terminally biotinylated FcRn comprising the steps of cultivating a mammalian cell comprising a deoxyribonucleic acid encoding FcRn and E. coli biotin-[acetyl-CoA-carboxylase] ligase (BirA) in a biotin containing medium, and recovering C-terminally biotinylated FcRn from the cell or the cultivation medium, wherein the deoxyribonucleic acid encoding FcRn and E. coli BirA is stably integrated into the genome of the mammalian cell and comprises in 5′- to 3′-direction a first expression cassette encoding class I major histocompatibility complex-like protein (α-FcRn) comprising a HisAvi-tag at the C-terminus, a second expression cassette encoding β2-microglobulin (β2m), a third expression cassette encoding class I major histocompatibility complex-like protein (α-FcRn) comprising a HisAvi-tag at the C-terminus, a fourth expression cassette encoding β2-microglobulin (β2m), and a fifth expression cassette encoding E. coli biotin-[acetyl-CoA-carboxylase] ligase.
Owner:F HOFFMANN LA ROCHE INC

Recombinant bacterium for producing mevalonic acid by taking glucose and acetone as co-substrates as well as construction method and application of recombinant bacterium

The invention discloses a recombinant bacterium for producing mevalonic acid by taking glucose and acetone as co-substrates as well as a construction method and application of the recombinant bacterium, and belongs to the technical field of genetic engineering. The problems that an existing mevalonic acid biosynthesis mode is low in carbon atom economy, limited in theoretical yield and the like are solved. According to the invention, acetone carboxylase, acetoacetyl coenzyme A synthetase, 3-hydroxy-3-methylglutaryl coenzyme A reductase and hydroxymethyl glutaryl-CoA synthetase are subjected to heterologous expression in escherichia coli with an acetyl coenzyme A acetyltransferase gene atoB and a histidine protein kinase gene atoS knocked out, and self carbonic anhydrase is over-expressed; and a new way for synthesizing MVA by using glucose and acetone as a co-substrate is constructed. According to the method, one molecule of CO2 can be fixed in the biosynthesis of mevalonic acid, the yield of carbon atoms in the synthesis process of mevalonic acid is increased, the problem of low yield of carbon atoms in the synthesis process of mevalonic acid by taking glucose as a single substrate is solved, and a new thought is provided for constructing a carbon neutralization type biological manufacturing technology.
Owner:QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI

A method for improving the conversion rate of ethanol to acetyl coenzyme a in yeast, an engineered bacterium and its application in the production of 3-hydroxypropionic acid

The present application relates to a method for improving the conversion rate of ethanol to acetyl-CoA in yeast, an engineered bacterium and its application in the production of 3-hydroxypropionic acid. The engineered bacterium lacks pfk1 and pfk2 genes; the engineered bacterium also overexpresses mutACC1, MCRC, MCRN, Zwf1, Gnd1, Tal1, Rki1, Rpe1, Tkl1 and the fused CaGAPDH and Pos5 genes. The present application systematically combs and modifies the metabolic pathway of ethanol to acetyl-CoA in Saccharomyces cerevisiae, effectively improves the conversion rate of ethanol to acetyl-CoA, and through adaptive laboratory evolution, the intracellular reducing power and energy balance are remodeled, realizing the efficient and stable synthesis of 3-hydroxypropionic acid in Saccharomyces cerevisiae. In addition, the present application remolds the central metabolism of yeast, providing a new idea for efficient conversion of low-carbon compounds using synthetic biology methods.
Owner:SHENZHEN INST OF ADVANCED TECH +1

Kit for carbon dioxide detection and detection method

The invention relates to the technical field of in-vitro detection, in particular to a kit for carbon dioxide detection and a detection method. By adjusting the pH value of a reaction system, reducing the pH value to 6.0-7.0, properly increasing the PEP feeding amount and reducing the PEPC enzyme dosage, the reaction rate can be remarkably inhibited under the condition, the PEP consumption rate is reduced, and the airborne stability can be improved. Furthermore, an activating agent acetyl coenzyme A is added in a reaction system and can be in synergistic effect with cofactors such as Mg < 2 + > and the like at a detection temperature, so that the activity of PEPC enzyme is obviously activated, and the reactivity during sample detection is improved, thereby improving the analysis sensitivity and test repeatability of the reagent and achieving a relatively ideal level; if the activators acetyl coenzyme A and GDP are added at the same time, the reactivity during sample detection can be remarkably improved, the analysis sensitivity and test repeatability of the reagent are remarkably improved, and the airborne stability and the performance of the reagent both reach the optimal level under the condition.
Owner:SHENZHEN NEW INDS BIOMEDICAL ENG CO LTD

Compound enzyme preparation-containing nutritional feed for regulating intramuscular fat of black pigs and preparation method of compound enzyme preparation-containing nutritional feed

The invention discloses a compound enzyme preparation-containing nutritional feed for regulating and controlling intramuscular fat of black pigs and a preparation method of the compound enzyme preparation-containing nutritional feed, and relates to the technical field of livestock and poultry breeding feeds. The invention discloses a black pig skeletal muscle cell fat directional transport feed which is prepared from the following components in parts by weight: 850-920 parts of basal feed, 5-12 parts of fat directional deposition compound enzyme group, 25-40 parts of amino acid-enzymatic synthesis substrate combination and 2-6 parts of lipolytic enzyme specific inhibitor. According to the black pig skeletal muscle cell fat directional transport feed, fat precursor directional transport is realized through the compounded fat directional deposition compound enzyme group, a fat synthesis pathway targeting black pig skeletal muscle cells and lipoprotein lipase; acetyl-coenzyme A carboxylase and fatty acid synthetase catalyze fat synthesis step by step, only intramuscular fat generation pathways are activated, subcutaneous and abdominal fat deposition paths are blocked, the technical defects that fat deposition of an existing single enzyme preparation is non-directional, and the body fat rate is caused to be abnormally increased are overcome, meanwhile, an exclusive amino acid-enzymatic synthesis substrate combination is matched, and the body fat synthesis efficiency is improved. Sufficient adaptive substrates are supplied to enzyme group catalytic reaction, and the problem that a single enzyme preparation is insufficient in catalytic efficiency is solved.
Owner:SHENYANG ACAD OF AGRI SCI

Yeast engineering bacteria and its application in whole fermentation production of steviol glycosides

PendingCN122326414AKaurenoic acidYeast fungi
This invention relates to the field of biosynthesis technology, and particularly to engineered yeast strains and their application in the total fermentation production of steviol glycosides. This invention utilizes site-directed mutagenesis to mutate wild-type kaurenoic acid 13-hydroxylase, obtaining the G481L / Q159L mutant. This mutant is then applied to the production of steviol or steviol glycosides, constructing a steviol or steviol glycoside synthesis pathway in the *Saccharomyces cerevisiae* host to achieve efficient production of steviol or steviol glycosides. Simultaneously, by enhancing the level of diterpene precursor synthesis genes in chassis cells (MVA pathway, acetyl-CoA, GGPP, transport proteins, UDPG pathway), the yield of steviol glycosides is further increased, reducing costs for industrial production.
Owner:SICHUAN INGIA BIOSYNTHETIC CO LTD

Novel acetyl coenzyme A optical probe as well as preparation method and application thereof

The invention relates to an acetyl coenzyme A probe as well as a preparation method and application thereof. Specifically, the acetyl coenzyme A optical probe comprises acetyl coenzyme A sensitive polypeptide and optical active polypeptide, and the optical active polypeptide is located in the sequence of the acetyl coenzyme A sensitive polypeptide.
Owner:PROVOSON LIFE SCIENCE & TECHNOLOGY CO LTD

Genetically engineered microbe for the production of terpenes and method of production thereof

PCT designated stageWO2026096372A1FungiBacteriaHeterologousChemical reaction
A genetically engineered microbe capable of producing isoprene from glycerol includes at least a native nucleic acid sequence encoding at least a native enzyme capable of catalyzing one or more steps of a conversion from at least a carbon source to acetyl coenzyme A (A-CoA), at least a first heterologous nucleic acid sequence encoding at least a first enzyme of a mevalonate (MVA) pathway, and at least a second heterologous nucleic acid sequence encoding at least a second enzyme capable of catalyzing at least a terpene-producing chemical reaction, wherein the at least a carbon source includes glycerol.
Owner:CYCLOKINETICS INC

Pichia pastoris engineering bacteria for converting methanol to synthesize bakuchiol from scratch and construction and application thereof

The application discloses a Pichia pastoris engineering bacterium for converting methanol to synthesize bakuchiol from scratch as well as construction and application of the bacterium. In different chromosomal neutral sites of the Pichia pastoris, a heterologous p-coumaric acid synthesis pathway is introduced, key genes of tyrosine and phenylalanine synthesis pathways of a heterologous shikimic acid pathway are knocked out, overexpressed or heterologously expressed, a high-yield p-coumaric acid strain is obtained, on the basis of the strain, a heterologous bakuchiol biosynthesis pathway is introduced, bakuchiol synthetase is overexpressed, key genes of a MVA pathway and genes of an exogenous acetyl coenzyme A supply pathway are endogenously overexpressed or heterologously expressed, after optimization of a methanol concentration and back complementation of a His4 gene of the strain, the yield of the bakuchiol is effectively increased to 91.2 mg / L, which is 59.8 times higher than that of an initial strain, and the yield of the bakuchiol in a 15L fermenter reaches 692.8 mg / L. The application has the characteristics of high conversion efficiency, low production cost, easy preparation, wide industrial application prospect and the like.
Owner:SOUTH CHINA UNIV OF TECH +1

Insecticidal and acaricidal composition

The invention belongs to the field of insecticidal and acaricidal agents, and relates to an insecticidal and acaricidal composition. The composition contains an active component A and an active component B, and the weight part ratio of the active component A to the active component B is (1: 99)-(99: 1); the active component A is selected from a compound I; the active component B is selected from inhibitors influencing the growth of chitin synthetase 1 (CHS1) mites, mitochondrial adenosine triphosphate (ATP) synthetase inhibitors, mitochondrial electron transfer complex (III) inhibitors, mitochondrial electron transfer complex (I) inhibitors, acetyl-CoA carboxylase inhibitors and mitochondrial electron transfer complex (II) inhibitors; a trifluoroethyl sulfide type acaricide or other types of insecticidal and acaricide; the composition disclosed by the invention has the advantages of obvious synergism, resistance delay and the like, and can be used for preventing and treating various pests.
Owner:SHANDONG MEIYANG BIO-TECHNOLOGY CO LTD

Recombinant halophilic bacteria for producing PHBV by using acetate as single carbon source and application of recombinant halophilic bacteria

The invention relates to the technical field of bioengineering, in particular to a recombinant halophilic bacterium for producing PHBV by using acetate as a single carbon source and application of the recombinant halophilic bacterium. The expression and / or activity of 2-methyl citrate synthetase and succinate dehydrogenase assembly factor 2 of the recombinant halophilic bacteria provided by the invention are reduced, 3-hydroxyvaleric acid synthetic genes scpA and scpB are overexpressed, an ADP-dependent acetyl coenzyme A synthetase gene acd is overexpressed, and a heterologous monocarboxylic acid transporter gene mctC is expressed. The strain can generate PHBV without adding precursors such as propionic acid and valeric acid, acetic acid or acetate can be used as a sole carbon source to produce PHBV, the yield is close to that when glucose is used as a carbon source, and the problems that the added precursor substances have certain toxicity, so that the growth of thalli is influenced, and the yield is reduced are solved; environmental pollution caused by addition of precursor substances is avoided, and meanwhile, the fermentation production cost of the PHBV is effectively reduced.
Owner:BEIJING PHABUILDER BIOTECHNOLOGY CO LTD

Method for preparing glycine, acetyl coenzyme a, and acetyl coenzyme a derivative by using threonine

Provided is a method for preparing glycine by using threonine. In a fermentation process, threonine is decomposed into glycine and acetaldehyde by aldolase. Also provided is a method for simultaneously preparing glycine and acetyl coenzyme A. In a fermentation process, acetaldehyde is reduced into acetyl coenzyme A or an acetyl coenzyme A derivative by acetylating acetaldehyde dehydrogenase; or threonine is dehydrogenated by threonine dehydrogenase to obtain 2-amino-3-ketobutyric acid, which is then ligated by 2-amino-3-ketobutyrate CoA ligase to obtain acetyl coenzyme A, and acetyl coenzyme A can be converted into an acetyl coenzyme A derivative under different fermentation conditions. The present disclosure features a unique concept, enabling the preparation of glycine, acetyl-CoA, and acetyl-CoA derivatives with high conversion efficiency, shorter time consumption, high yield, abundant products, and suitability for industrial processing and production.
Owner:MINT BIOTECH LTD

Methods and cells for the production of fluorinated compounds

The present invention relates to a cell capable of producing a fluorinated compound, in particular F-acetaldehyde and optionally F-acetyl-CoA and F-acetate, methods for producing fluorinated compounds in a cell and expression systems thereof.
Owner:DANMARKS TEKNISKE UNIV

Tomato plants with improved whitefly resistance

The present invention relates to tomato plants having improved insect resistance, more specifically whitefly or mite resistance, comprising the ASAT3 gene encoding an acetyl-CoA-dependent acyltransferase enzyme and the AP2e gene encoding the APETALA2 ethylene-responsive transcription factor. The present invention further relates to methods for preparing tomato plants with improved insect resistance and to the use of the ASAT3 gene in combination with the AP2e gene to provide insect-resistant tomato plants.
Owner:ENZA ZADEN BEHEER BV

Recombinant escherichia coli with high yield of o-acetyl-l-homoserine and application thereof

The present application relates to the technical field of genetic engineering, and discloses a recombinant Escherichia coli for high-yield O-acetyl-L-homoserine and application thereof. The recombinant Escherichia coli for high-yield O-acetyl-L-homoserine is obtained by the following combination of modification strategies: in Escherichia coli W3110, a gene encoding homoserine O-acetyltransferase is integrated into a gene site encoding L-arginine ABC transporter ATP binding subunit, then a gene encoding phosphoacetyltransferase is knocked out, then a gene encoding transcriptional anti-terminator and mRNA stability regulator is knocked out, then a gene encoding ATP-NAD kinase is integrated into a gene site encoding NADPH-dependent aldehyde reductase, and finally a gene promoter of acetyl-CoA synthetase is replaced by a Ptrc promoter to obtain the recombinant Escherichia coli. The recombinant Escherichia coli is used for fermentation to produce O-acetyl-L-homoserine, and has the advantage of high yield. metx artp patz cspc ppnk yahk acs ​​​​​​​
Owner:ZHEJIANG UNIV OF TECH

Recombinant pseudomonas putida for producing l-lactic acid by using whole component lignocellulose hydrolysate and construction method and application thereof

PendingCN122326497ACelluloseHydrolysate
The application discloses a kind of recombination of Pseudomonas putida for producing L-lactic acid using whole-component lignocellulose hydrolysate and its construction method and application, belong to the field of metabolic engineering.The application uses Pseudomonas putida KT2440 as chassis, realizes carbon flow to pyruvic acid convergence and prevents product degradation by knocking out aceEF 、 ppsA And lldD Gene;By in-situ replacement, introduce optimized Lactobacillus plantarum ldhL1 Reconfiguration L-lactic acid synthesis pathway;By integration xylD-yjhH Tandem expression cassette enables xylose utilization;And by quorum sensing promoter P Rox306 Overexpression maeB Realize funnel conversion of lignin monomer.The application innovatively uses lignin derivatives in hydrolysate as natural donor of endogenous acetyl-coenzyme A, makes up lethal growth defect caused by knocking out aceEF The engineering bacteria of the application realize the synchronous high-efficiency conversion of glucose, xylose and aromatic monomer under the condition of not adding exogenous auxiliary carbon source and chemical inducer, which greatly reduces the industrial fermentation cost.
Owner:SHAANXI NORMAL UNIV

Expression cassettes, expression vectors, genetically engineered strains and their applications in the preparation of malonic acid

PendingCN122303287AMalonic acidRibosomal protein
This invention provides an expression cassette, an expression vector, a genetically engineered strain, and their application in the preparation of malonic acid. The expression cassette includes expression cassette 1, expression cassette 2, and expression cassette 3. Expression cassette 1 includes the gene for the mitochondrial 37S ribosomal protein mS47; expression cassette 2 includes the ACC1 gene, which incorporates a mitochondrial localization signal encoding gene at its 5' end; and expression cassette 3 includes the upstream homologous arm of an endogenous ACC1 gene, which incorporates a weak promoter at its 5' end. This invention, through the expression cassette, can promote an increase in the levels of mS47 and ACC1 in mitochondria, thereby promoting the synthesis pathway of acetyl-CoA-malonyl-CoA-malonic acid (ACEA), while simultaneously reducing the level of endogenous ACC1 in the cytoplasm, avoiding competitive effects on the mitochondrial ACEA synthesis pathway, and ultimately effectively increasing malonic acid production.
Owner:WANHUA CHEM GRP CO LTD