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35 results about "P450 Enzymes" patented technology

A p450 enzyme mutant degrading herbicides and application thereof

PendingCN122445599ACarboxylic acidTransgene
The application discloses a P450 enzyme mutant for degrading herbicides and application thereof, and the P450 enzyme mutant is named P450 BSβ -F46A, P450 BSβ -F46A-CPR; the amino acid sequences are shown in SEQ ID NO. 2 and 4 respectively. The application also discloses application of the P450 enzyme mutant in degrading pyridine oxycarboxylic acid herbicides or aryloxyphenoxypropionic acid herbicides and related genes in cultivating herbicide-resistant transgenic crops. Experiments prove that the highest conversion rate of the P450 enzyme mutant for degrading pyridine oxycarboxylic acid herbicides reaches 86%, and the total conversion number of catalyzing flumiclorac can reach 7443 at most, and the highest catalytic conversion rate of degrading aryloxyphenoxypropionic acid herbicides reaches 89%. The P450 enzyme mutant provided by the application has the advantages of high catalytic efficiency, high protein expression amount and low industrial cost, and the whole operation process for degrading herbicides is simple, the process is mature, the cost is low, and the application prospect is wide.
Owner:SHANDONG UNIV

Fusion p450 enzyme mutants and methods of increasing catalytic activity towards vd3, methods of whole cell production of 25(oh)vd3

The present application relates to the field of agricultural biotechnology, in particular to fusion P450 enzyme mutants, methods for improving the catalytic activity of VD3, and methods for producing 25(OH)VD3 by whole cells, wherein a fusion P450 enzyme VK1-CYP116B46-L21 and a self-sufficient fusion P450 enzyme mutant with improved catalytic activity for synthesizing calcidiol from vitamin D3 are constructed; using VD3 as a substrate, adding glucose, a cosolvent, and a recombinant Escherichia coli expressing the fusion P450 enzyme and glucose dehydrogenase after induction, the maximum yield of 25(OH)VD3 can reach 3.26 g / L within 24 h after the catalytic reaction; directly using whole cells as catalysts without purifying enzymes, introducing glucose dehydrogenase to regenerate cofactor NAD(P)H using glucose as a substrate, avoiding the addition of expensive cofactors, reducing production costs, and being conducive to industrial production.
Owner:INSTITUTE OF ANIMAL SCIENCES OF CHINESE ACADEMY OF AGRICULTURAL SCIENCES

P450 enzyme mutant and engineering bacteria thereof in synthesis of calcifediol

ActiveCN121759422BBacteriaMicroorganism based processesMutantCalcifediol
The application belongs to the technical field of bio-chemical industry, and particularly relates to a P450 enzyme mutant and application of an engineering bacterium thereof in synthesis of calcifediol, the mutant is one or more point positions in an amino acid sequence based on a wild type P450 enzyme Vdh being mutated; the amino acid sequence of the wild type P450 enzyme Vdh corresponds to GenBank accession number CP069288.1. Through systematic molecular dynamics simulation, conservation analysis and substrate binding pocket engineering on the Vdh enzyme, multiple key mutation sites are successfully screened and obtained. The constructed combined mutant (such as I114R / N173M / Q310R, Vdh-M3) shows extremely high hydroxylation activity, and the pure enzyme activity can reach 9.8 times of the wild type enzyme, greatly improving the conversion rate from vitamin D3 to calcifediol.
Owner:HANGZHOU MEIYA PHARM CO LTD

Selective chemical modulation of human cytochrome p450 3a4

The present disclosure relates to relates to compounds that inhibit CYP3A4 selectively, pharmaceutical compositions, and methods of using the compounds and composition for treating a disease or disorder with a drug that is a P450 enzyme substrate. In addition, the disclosed compounds and compositions can be used for preventing P450 enzyme metabolism of a drug. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.
Owner:ST JUDE CHILDRENS RES HOSPITAL INC

Method for improving catalytic capacity of engineering P450 peroxygenase hydrogen peroxide and application thereof

The invention relates to gene modification, in particular to a method for improving the catalytic capacity of engineering P450 peroxygenase hydrogen peroxide and application of the method. The invention relates to a method for improving hydrogen peroxide catalytic capacity of P450 enzyme, which comprises the following steps of: identifying a channel of the P450 enzyme by using Caver Web 1.0 software by taking a heme cofactor of the P450 enzyme as a starting point; the method comprises the following steps: selecting a target channel with the channel length of 10-30, the curvature of 0-2 and the diameter of 0-3 as a target channel, then selecting amino acid of which the side chain faces the channel at an inlet or a bottleneck of the target channel as key amino acid, and then performing specific mutation on one or more key amino acids, further, at least one channel capable of improving the hydrogen peroxide catalytic capability of the P450 enzyme is obtained, so that the catalytic capability of the P450 enzyme is improved under the catalysis of hydrogen peroxide. The catalytic activity of a plurality of mutants obtained by the invention is compared with that of a wild enzyme, and the channel with high catalytic activity is an H2O2 channel. The application of the method can improve the hydrogen peroxide utilization capability of the P450 enzyme, and further improves the activity of the catalytic substrate of the P450 enzyme.
Owner:QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI

Application of P450 enzyme mutant and engineering bacteria thereof in synthesis of calcifediol

ActiveCN121759422AIncrease conversion rateHigh hydroxylation activityBacteriaMicroorganism based processesMutantCalcifediol
The invention belongs to the technical field of biochemical engineering, and particularly relates to application of a P450 enzyme mutant and engineering bacteria thereof in synthesis of calcifediol, and the mutant is obtained by mutating one or more sites in an amino acid sequence based on a wild type P450 enzyme Vdh; the amino acid sequence of the wild type P450 enzyme Vdh corresponds to the accession number of GenBank, namely CP069288.1. Through systematic molecular dynamics simulation, conservative analysis and substrate binding pocket engineering on the Vdh enzyme, a plurality of key mutation sites are successfully screened and obtained. The constructed combined mutant (such as I144R / N173M / Q310R, Vdh-M3) shows extremely high hydroxylation activity, the pure enzyme activity of the combined mutant can reach 9.8 times that of a wild type enzyme, and the conversion rate from vitamin D3 to calcifediol is greatly increased.
Owner:HANGZHOU MEIYA PHARM CO LTD

A method for selective hydroxylation at position 16 of dehydroabietic acid based on cyp153 family cytochrome p450 enzymes

PendingCN122629088AEscherichia coliHeterologous
The present application relates to the technical field of biosynthesis, and specifically discloses a method for selectively hydroxylating 16-position of dehydroabietyl acid based on CYP153 family cytochrome P450 enzyme, which comprises the following steps: plasmid construction, heterologous expression of CYP153A99-RhFRED in Escherichia coli, heterologous expression of opt13 in Escherichia coli, and crude enzyme catalytic conversion reaction. By optimizing the codon bias of the protein sequence of cytochrome monooxygenase in the CYP153 family, the p450 enzyme CYP153A99 with the biological catalytic function of catalyzing the hydroxylation of C16 position of dehydroabietyl acid is obtained, high-site selective oxidation of dehydroabietyl acid is realized, the substrate spectrum and application field of the CYP153 family P450 enzyme are expanded, and a new technical path is provided for the green synthesis of dehydroabietyl acid derivatives.
Owner:CHINA PHARM UNIV

Selective chemical modulation of human cytochrome p450 3a4

The present disclosure relates to relates to compounds that inhibit CYP3A4 selectively, pharmaceutical compositions, and methods of using the compounds and composition for treating a disease or disorder with a drug that is a P450 enzyme substrate. In addition, the disclosed compounds and compositions can be used for preventing P450 enzyme metabolism of a drug. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.
Owner:ST JUDE CHILDRENS RES HOSPITAL INC

P450 enzyme, mutant and application of P450 enzyme in synthesis of 14 alpha-hydroxyprogesterone

The invention provides a P450 enzyme CYP5103-BM capable of catalyzing 14 alpha-hydroxylation of progesterone, and a mutant CYP5103-BM-Y291H of the P450 enzyme CYP5103-BM. Wherein the gene sequence of the P450 enzyme CYP5103-BM is as shown in SEQ ID NO: 1, and the gene sequence of the mutant CYP5103-BM-Y291H is as shown in SEQ ID NO: 3. The transformants respectively carrying the CYP5103-BM gene and the CYP5103-BM-Y291H gene can be subjected to a whole-cell biological catalytic reaction to convert a substrate progesterone into 14 alpha-hydroxyprogesterone, and the conversion rates in 36 hours respectively reach 50.04% and 88.76%. The mutant CYP5103-BM-Y291H has higher catalytic activity on progesterone, the production cost of 14 alpha-hydroxyprogesterone can be greatly reduced, the production time can be shortened, and the mutant CYP5103-BM-Y291H has extremely high application value for industrial production of progesterone and research of C14-hydroxylated steroid drugs.
Owner:TIANJIN UNIV OF SCI & TECH

Colletotrichum linum P450 enzyme mutant and application thereof

PendingCN121294375AFungiMicroorganism based processesColletotrichum linicolaMutant
The invention discloses a colletotrichum linum P450 enzyme mutant and application thereof, the mutant is obtained by mutating 121st aspartic acid of an amino acid sequence of P450 enzyme CYP68J derived from a colletotrichum linum ST-1 strain into histidine, and the amino acid sequence is shown as SEQ ID NO: 1. Compared with a wild type P450 enzyme, the P450 enzyme mutant disclosed by the invention has the advantages that dehydroepiandrosterone can be efficiently converted into 7 alpha-hydroxy-dehydroepiandrosterone, and the ratio of 7 alpha-hydroxy-dehydroepiandrosterone to 7 alpha, 15 alpha-dihydroxy-dehydroepiandrosterone in a hydroxylation product can be increased from about 4: 5 to about 14: 1; an important way is provided for the biological conversion of the 7alpha-hydroxyl-dehydroepiandrosterone, and the method has important significance on the industrial production of the 7alpha-hydroxyl-dehydroepiandrosterone.
Owner:JIANGSU JIAERKE PHARMA GRP CORP

P450 enzyme mutant, fusion protein and application thereof

The application provides a P450 enzyme mutant, a fusion protein and application thereof, the mutant is selected from any one of the following: a mutant formed by mutating an amino acid at the 85th position of a P450 enzyme shown in SEQ ID NO: 1 into glycine, alanine or cysteine, a mutant formed by mutating an amino acid at the 89th position of a P450 enzyme shown in SEQ ID NO: 2 into glycine, a mutant formed by mutating an amino acid at the 93rd position of a P450 enzyme shown in SEQ ID NO: 3 into glycine, a mutant formed by mutating an amino acid at the 85th position of a P450 enzyme shown in SEQ ID NO: 4 into glycine, and a mutant formed by mutating an amino acid at the 89th position of a P450 enzyme shown in SEQ ID NO: 5 into glycine. The P450 enzyme mutant can catalyze intramolecular C-S bond formation, and through improving the product selectivity of the P450 enzyme, specific synthesis of high-purity sulfur-containing compounds is realized.
Owner:ENJOY ENTROPY BIOTECHNOLOGY (SHANGHAI) CO LTD

Enzyme compositions containing p450 enzymes and their use in the production of steroids

PendingCN122445590ASide chainIsomerase
This invention discloses sterol side-chain cleaving enzymes and 3β-hydroxysteroid dehydrogenases / Δ from different sources. 4,5 Amino acid sequences, coding sequences, and applications of isomerases. This invention, based on synthetic biology and molecular pharmacognosy, explores sterol side-chain cleaving enzymes and 3β-hydroxysteroid dehydrogenases / Δ from different plant sources. 4,5 Isomerases, which will yield sterol side-chain cleavage enzymes and 3β-hydroxysteroid dehydrogenases / Δ 4,5 The coding sequences of the isomerases were constructed into expression cassettes, and using Saccharomyces cerevisiae as the chassis strain, highly efficient pregnenolone or progesterone synthesizing strains were obtained. The pregnenolone yield of the constructed strains reached as high as 14.46±2.16 mg / L, and the progesterone yield reached as high as 32.78±1.84 mg / L. This achieved high-level synthesis of pregnenolone and progesterone by genetic engineering methods, providing an important foundation for the green synthesis of steroid hormones.
Owner:TIANJIN INST OF IND BIOTECH CHINESE ACADEMY OF SCI

Cytochrome P450 reductase coding gene CPR2 from aspergillus nidulans and application thereof

PendingCN121737167AFungiMicroorganism based processesCytochrome P450 reductaseNucleotide
The invention belongs to the technical field of gene engineering and microbial fermentation, and particularly discloses a cytochrome P450 reductase coding gene CPR2 from aspergillus nidulans and application thereof. The nucleotide sequence of the gene is shown as SEQ ID NO: 1, and the amino acid sequence of the protein coded by the gene is shown as SEQ ID NO: 2. According to the invention, the CPR2 gene (OECPR2) is identified as an optimal electron transfer regulatory element by performing function screening on eight CPR genes annotated in a genome, and the CPR2 gene is over-expressed in an echinocandin B production strain aspergillus nidulans, so that the intracellular electron transfer efficiency is remarkably enhanced, the enzyme catalytic activity of cytochrome P450 is driven, and the cytochrome P450 can be used for preparing an echinocandin B cell. And finally, the yield of echinocandin B is efficiently increased. Experiments show that the engineering strain for over-expression of CPR2 can enable the yield of echinocandin B to reach 1869.97 + / -96.98 mg / L in shake flask fermentation, which is 24.37% higher than that of the original strain. The invention provides a key gene element and an engineering strain for industrial efficient production of echinocandin B, and has important economic value.
Owner:ZHEJIANG UNIV OF TECH +1

P450 enzyme mutant, method for improving C3'hydroxylation activity of P450 enzyme, and method for generating 3 '-ODI by whole cells

PendingCN121718506ABacteriaMicroorganism based processesDaidzeinCytochrome p450 enzyme
The invention relates to the technical field of agricultural biology, in particular to a P450 enzyme mutant, a method for improving C3'hydroxylation activity of P450 enzyme and a method for generating 3 '-ODI through whole cells. The cytochrome P450 enzyme mutant disclosed by the invention can selectively catalyze the daidzein to generate a C3'hydroxylation reaction to generate corresponding 3 '-ODI, has excellent selectivity and relatively high yield, and provides an efficient and reliable catalytic tool for the C3' hydroxylation reaction of the daidzein. The P450 enzyme mutant, a glucose dehydrogenase driven NAD (P) H regeneration module and a redox partner system Fdx / FdR are subjected to multi-enzyme co-expression, a cofactor self-circulating single plasmid four-enzyme co-expression system is successfully constructed, and the method is mild in reaction condition and low in catalyst cost and is an ideal scheme for preparing 3 '-ODI.
Owner:INSTITUTE OF ANIMAL SCIENCES OF CHINESE ACADEMY OF AGRICULTURAL SCIENCES

P450 enzyme mutant, encoding gene and application thereof

ActiveCN116790531BIncreased soluble expression levelshigh catalytic levelBacteriaMicroorganism based processesEscherichia coliCortisone
The application discloses a P450 enzyme mutant, a coding gene and application thereof in preparation of cortisone, and belongs to the technical field of bioengineering. The P450 enzyme mutant is obtained by amino acid mutation of CYP11B1 from Homo sapiens with an amino acid sequence shown as SEQ ID NO. 1, and the amino acid mutation site is at least one of S146V, H331D and L440F. The P450 enzyme mutant provided by the application has a higher soluble expression level in Escherichia coli than wild-type CYP11B1, the catalytic level of the constructed recombinant expression strain is higher, 11-deoxycortisol can be used as a substrate to prepare cortisone, the yield of the product is high, no by-product is generated, and the P450 enzyme mutant has a good industrial application prospect.
Owner:ZHEJIANG UNIV

Phenoxy carboxylic acid herbicide-degrading p450 enzyme mutants and applications thereof

The application discloses a kind of P450 enzymes and mutants thereof degrading phenoxy carboxylic acid herbicides, the P450 enzyme is respectively named as P450 BSβ , OleT JE ;The P450 enzyme mutant is respectively named as P450 BSβ -F46A, P450 BSβ -F79A, P450 BSβ -F173A, P450 BSβ -F289A, P450 BSβ -F292A;Its amino acid sequence is respectively shown as SEQ ID NO.1-7.The application also discloses the application of the P450 enzyme and mutants thereof in degrading phenoxy carboxylic acid herbicides and related genes in cultivating transgenic crops resistant to phenoxy carboxylic acid herbicides.Experiments prove that the efficiency of the P450 enzyme mutant in degrading phenoxy carboxylic acid herbicides can be up to 12.3 times of P450 BSβ , and the total conversion number of catalyzing 2,4-dichlorophenoxybutyric acid can be up to 8779.The P450 enzyme mutant disclosed in the application has the advantages of high catalytic efficiency, high protein expression and low industrial cost, and the whole operation process of degrading herbicides is simple, the process is mature, the cost is low, and has wide application prospect.
Owner:SHANDONG UNIV

Engineering bacterium for converting 4-hydroxyphenyllactic acid to generate tanshinol and application of engineering bacterium

The invention discloses an engineering bacterium for converting 4-hydroxyphenyllactic acid to generate tanshinol, which is characterized in that a P450 enzyme subfamily gene CYP98A75 gene from a plant salvia miltiorrhiza is introduced into escherichia coli, and a P450 reductase gene CPR from the plant salvia miltiorrhiza is co-expressed to construct an escherichia coli recombinant engineering bacterium. The engineering bacterium can catalyze a substrate 4-hydroxyphenyllactic acid to generate tanshinol. The engineering bacterium obtained by the invention is simple in culture method, high in pronucleus yield, single in product and easy to purify, and has important industrial application value.
Owner:YICHUN UNIVERSITY

Use of p450 enzymes in catalyzing squalene oxidation

PendingCN122303335AYeastCarboxylic acid
This invention belongs to the field of bioengineering technology and provides the application of P450 enzyme in catalyzing the oxidation of squalene. Several cytochrome P450 genes were cloned from the full-length transcriptome data of the medicinal plant *Alisma plantago-aquatica*. Preliminary screening of the gene sequences corresponding to the P450 enzyme was conducted using bioinformatics. Recombinant vectors were prepared using the screened genes and transformed into squalene-producing yeast for gene function verification. This demonstrated the oxidation effect of the P450 enzyme encoded by the AoCYP_3836 gene on squalene, providing a novel reaction mode different from the traditional 2,3-epoxidation reaction of squalene. The results show that the P450 enzyme encoded by the AoCYP_3836 gene can catalyze the oxidation of squalene to produce two new products: squalene-1,1'-diol and squalene-1-carboxylic acid-24-ol, providing a new pathway for the production of these squalene oxides.
Owner:SHANGHAI UNIV OF T C M

P450 enzyme, mutant and application of P450 enzyme in synthesis of 11alpha, 17alpha-dihydroxyprogesterone

PendingCN121271812AFungiMicroorganism based processesProgesteronesMutant
The invention discloses a P450 enzyme CYP-SA and a mutant CYP-SA-MT3 of the P450 enzyme CYP-SA. The gene sequences of the P450 enzyme CYP-SA and the mutant CYP-SA-MT3 are respectively shown as SEQ ID NO: 1 and SEQ ID NO: 3. The transformant carrying the CYP-SA gene and the CYP-SA-MT3 gene can catalyze 17 alpha-hydroxyprogesterone to generate 11 alpha, 17 alpha-dihydroxyprogesterone, the 72-hour conversion rates respectively reach 54.3% and 86.4%, and the C11 alpha hydroxylation selectivity is respectively 82.4% and 93.2%. The P450 enzyme CYP-SA and the mutant CYP-SA-MT3 have an extremely high industrial application value in the production of the 11 alpha, 17 alpha-dihydroxyprogesterone by a biological method.
Owner:TIANJIN UNIV OF SCI & TECH

A p450 enzyme mutant for steroid c11a-hydroxylation

PendingCN122278786AProgesteronesPharmaceutical Substances
This invention relates to the field of biotechnology, and more particularly to a P450 enzyme mutant for steroid C11α-hydroxylation, the amino acid sequence of which is shown in SEQ ID NO:2. In a whole-cell catalytic system of *Saccharomyces cerevisiae*, this P450 enzyme mutant achieved a 14-fold increase in the conversion rate of 17α-hydroxyprogesterone compared to the wild type. Expression of this mutant in a systematically modified *Pichia pastoris* chassis strain increased the substrate conversion rate to 96.5% and the product selectivity to 99.1%. Scale-up culture at 2.5 L, with a single feed of 60 g of substrate, yielded a 11α,17α-dihydroxyprogesterone titer of 24.8 g / L. Furthermore, this mutant also exhibited good catalytic activity and C11α-hydroxylation selectivity for various steroid drugs such as progesterone and canrenone, demonstrating a broad substrate spectrum and promising prospects for industrial applications.
Owner:HUBEI UNIV

Cytochrome p450 enzymes from tetradium cumingii and their use in the biosynthesis of aporphine alkaloids

ActiveCN118703454BHeterologousCytochrome p450 enzyme
The application discloses a cytochrome P450 enzyme derived from Stephania sinica Diels and application thereof in biosynthesis of aporphine alkaloid compounds. The application first characterizes a key P450 involved in formation of a methylenedioxy bridge structure of aporphine alkaloids in Stephania sinica Diels, provides an important reference for analysis of an aporphine alkaloid biosynthesis pathway in other species, and lays a foundation for heterologous production of various aporphine alkaloids. The application screens a P450 enzyme CYP719C3 annotated as CYP719 in a genome of Stephania sinica Diels, performs enzymatic reactions with different aporphine compounds as substrates, and detects reaction results by using a liquid chromatograph-mass spectrometer. It is found that CYP719C3 can catalyze an enzyme forming a methylenedioxy bridge on an A ring of an aporphine alkaloid, and can be applied to further analysis and heterologous production of an aporphine alkaloid pathway.
Owner:INSTITUTE OF CHINESE MATERIA MEDICA CHINA ACADEMY OF CHINESE MEDICAL SCIENCES

Animal cytochrome p450 oxidoreductase from corals and uses thereof

This invention belongs to the technical fields of genetic engineering and fermentation engineering, and discloses an animal cytochrome P450 oxidoreductase derived from coral and its applications. Its amino acid sequence is shown in SEQ ID NO:1, and the invention also relates to its encoding gene and recombinant vector. This invention integrates the CPR gene into the chromosome of *Saccharomyces cerevisiae* to construct a recombinant strain for driving P450 enzyme catalytic reactions. Experiments show that, compared to CPR from other sources, this coral-derived CPR significantly improves electron transport efficiency, effectively catalyzing the conversion of substrate into products 1 and 2. Under optimized fermentation conditions, the product conversion rate of this recombinant strain reaches 0.44, far exceeding that of plasmid expression systems. This invention provides an excellent electron transport element and engineered strain for the efficient application of P450 enzymes and the synthesis of natural products.
Owner:SHANDONG UNIV

Ferroreductin mutants and their application in mouse deoxycholic acid synthesis

ActiveCN119306810BBacteriaMicroorganism based processesChaperone (protein)Desoxycholic acid
This invention discloses a ferrugin mutant and its application in the synthesis of mouse deoxycholic acid, belonging to the field of biocatalytic enzyme technology. This invention uses *E. coli* as the chassis strain to express the P450 enzyme OleP and establishes a three-component redox chaperone library, screening for the most suitable redox chaperones PetH / PetF for OleP. A high-throughput method based on characteristic absorbance values ​​is developed, enabling rapid and efficient detection of lithocholic acid and mouse deoxycholic acid. Furthermore, through semi-rational design of ferrugin proteins, a ferrugin mutant, PetF, is screened. F64D This method can significantly improve the conversion rate of catalytic preparation of mouse deoxycholic acid. It provides a new strategy for improving the biosynthesis of hydroxylated steroidal substances.
Owner:JIANGNAN UNIV

A soluble expression vector of P450 enzyme for producing indole-3-methylamine and construction method and application thereof

The application discloses a soluble expression vector of a P450 enzyme for producing indole-3-methylamine and a construction method and application thereof. The construction method is that a nucleotide sequence for coding a P450 enzyme tAMIS protein and a nucleic acid sequence for coding a NADPH-cytochrome reductase CPR protein are expressed in a vector, so that a soluble expression vector of a plant-derived P450 enzyme in Escherichia coli is obtained. The expression vector solves the problem that most plant-derived P450 enzymes cannot exhibit biological activity in the Escherichia coli, and compared with using plants or yeasts as hosts, the time consumed for expressing proteins is reduced. A method for detecting indole-3-methylamine synthesized by the Escherichia coli through an exogenous gene is provided.
Owner:TIANJIN UNIV

P450 fusion protein, genetically engineered bacterium and application of P450 fusion protein and genetically engineered bacterium in synthesis of calcifediol

The invention belongs to the technical field of biochemical engineering, and particularly relates to a P450 fusion protein, the structure of the fusion protein is VdhM3-Linker1-AciC-Linker2-AciB, VdhM3 is Vdh-M3 (I144R / N173M / Q310R), and VdhM3 is Vdh-M3 (I144R / N173M / Q310R); the GenBank login numbers of the coding genes of the AciC and the AciB are both AB221118.1, and the GenBank login numbers of the coding genes of the AciC and the AciB The amino acid sequence of the Linker2 is GSGSGH; and the Linker 1 is a flexible connector, a rigid connector or a flexible-rigid combined connector. By means of system screening, it is determined that the AciC / AciB redox partner system derived from acinetobacter has the optimal suitability with VdhM3 P450 enzyme, the catalytic activity is high, the selectivity of the target product calcifediol reaches up to 95%, generation of by-products is reduced, and the purification efficiency and yield of the product are improved.
Owner:HANGZHOU MEIYA PHARM CO LTD

3-methylindole efficient degrading bacterium P450 enzyme gene YKSWp450 and application thereof

The invention relates to an enzyme gene YKSWp450 of a 3-methylindole efficient degrading bacterium P450 and application of the enzyme gene YKSWp450, based on a gene with a skatole degrading function in rhodococcus gordoni YKSW-6, a remarkably up-regulated gene YKSWp450 with a coding oxidation-reduction function enzyme is screened out through screening and amplification of a target gene, and it is proved through heterologous expression and a whole-cell biotransformation test that the gene YKSWp450 has the advantages that the gene YKSWp450 has the function of degrading skatole and has the function of degrading skatole in the rhodococcus gordoni YKSW-6, and the gene YKSWp450 has the function of degrading skatole in the rhodococcus gordoni YKSW-6; the gene has the ability of degrading skatole, both escherichia coli added with recombinant plasmids and purified enzyme can degrade 100 mg / L of skatole, the removal rate reaches 75% or above, and the gene can be effectively used for treating skatole pollution in the environment.
Owner:HENAN ACAD OF SCI INST OF BIOLOGY LIABILITY +2

P450 fusion protein, genetically engineered bacteria and application thereof in synthesis of calcifediol

The application belongs to the technical field of bio-chemical industry, and particularly relates to a P450 fusion protein, and a structure of the fusion protein is VdhM3-Linker1-AciC-Linker2-AciB, wherein VdhM3 is Vdh-M3 (I114R / N173M / Q310R); the GenBank accession numbers of the encoding genes of AciC and AciB are both AB221118.1; the amino acid sequence of Linker2 is GSGSGH; and Linker1 is a flexible linker, a rigid linker or a flexible-rigid combined linker. Through systematic screening, it is determined that the AciC / AciB oxidation-reduction partner system derived from Acinetobacter has the best adaptability with the VdhM3 P450 enzyme, the catalytic activity is high, and the selectivity of the target product calcifediol is as high as 95%, the generation of by-products is reduced, and the purification efficiency and yield of the product are improved.
Owner:HANGZHOU MEIYA PHARM CO LTD

4-hydroxyphenylacetic acid 3-monooxygenase mutant and application thereof

The invention discloses a 4-hydroxyphenylacetic acid 3-monooxygenase mutant and application thereof, the 4-hydroxyphenylacetic acid 3-monooxygenase mutant comprises seven single mutants, the seven single mutants are respectively Q212T, Q212A, V213P, V213A, Y301R, N460M and N460A, and the gene sequence is shown as SEQ ID NO.1-7. The invention further discloses a preparation method of the 4-hydroxyphenylacetic acid 3-monooxygenase mutant. According to the invention, a high-activity 4-hydroxyphenylacetic acid 3-monooxygenase mutant EcHpaB is constructed, after the mutant and a reductase component EcHpaC are co-expressed, the co-expressed mutant and reductase component EcHpaC and CsF3H are introduced into an escherichia coli chassis at the same time, the mutant and the reductase component EcHpaC can be used for preparing dihydroquercetin, the 3 '-hydroxylation reaction efficiency is remarkably improved, and efficient production of dihydroquercetin is realized; the method does not need to depend on heterologous P450 enzyme, has the advantages of being simple in heredity, convenient and fast to operate, low in fermentation cost and the like, and provides a new synthesis thought for efficient production of dihydroquercetin.
Owner:NANJING FORESTRY UNIV

Benzene ring stereoisosteric modified bicyclo [1.1. 1] pentane compound as well as preparation method and application thereof

The invention relates to the technical field of organic chemistry, and particularly discloses a benzene ring stereoisosteric modified bicyclo [1.1. 1] pentane compound as well as a preparation method and application thereof, the technical core is that triplet-state carbene is inserted into bicyclo [1.1. 1] butane (BCB) under a photosensitive condition, and a new path for synthesizing C2-substituted BCP is developed. The spanning from a two-dimensional plane to a three-dimensional structure is realized by replacing a disubstituted benzene ring in a drug skeleton (such as Sonidegi and axitinib) with BCP. According to the bioisostere modification, the water solubility and metabolic stability of molecules are improved by utilizing an sp3 skeleton, the limitation that a benzene ring is easily oxidized by P450 enzyme is overcome, the compound is successfully endowed with remarkable cytotoxic activity, and experiments prove that by adjusting charge distribution and spatial conformation, the cytotoxic activity of the compound is remarkably improved. Important guidance is provided for development of active molecules with new purposes, and the project is funded by key support projects of Guangming advanced research institutes of Southern Science and Technology Universities.
Owner:SOUTHERN UNIVERSITY OF SCIENCE AND TECHNOLOGY

Method for synthesizing sclareol by using recombinant saccharomyces cerevisiae

PendingCN121406472AFungiTransferasesTaxadieneTaxadiene synthase
The present invention discloses a method for synthesizing sclareol using recombinant Saccharomyces cerevisiae, a recombinant Saccharomyces cerevisiae strain for producing sclareol, the strain comprising: a modified mevalonic acid (MVA) pathway for enhancing the supply of farnesyl pyrophosphate (FPP); a taxadiene synthase (TS) coding gene is introduced in an exogenous manner; the coding gene of taxadiene-5alpha-hydroxylase (T5H) is introduced in an exogenous manner; and a sclareol synthase (SSS) coding gene is introduced from an external source. The method realizes de novo synthesis of sclareol in saccharomyces cerevisiae, does not depend on plant extraction, significantly improves path efficiency and product yield through multi-gene coordinated regulation and organelle compartment, is environment-friendly and sustainable in the production process, is easy to amplify to an industrial scale, and has a wide application prospect. And a referential general strategy is provided for expressing a complex P450 enzyme system in yeast.
Owner:KUNSHAN YAXIANG SPICEL CO LTD