1204 results about "Gene code" patented technology

L-Cysteine is produced by culturing a microorganism having an ability to produce L-cysteine and modified so that expression of emrAB, emrKY, yojIH, acrEF, bcr, or cusA gene should be enhanced in a medium to produce and accumulate L-cysteine in the medium and collecting the L-cysteine from the medium. Genes coding for novel L-cysteine-excreting proteins are identified, and utilized for breeding of L-cysteine-producing microorganism to provide a novel method of producing L-cysteine.

L-Arginine is produced by culturing a coryneform bacterium in which an arginine repressor involved in L-arginine biosynthesis is deleted by disrupting a gene coding for the repressor, and which has L-arginine producing ability in a medium to produce and accumulate L-arginine in the medium, and collecting the L-arginine from the medium.

A yeast strain, wherein the yeast strain is transformed with at least one copy of a gene coding for <SMALLCAPS>D</SMALLCAPS>-lactate dehydrogenase functionally linked to a promoter sequence allowing the expression of the gene in the yeast strain and the yeast strain has undergone disruption of one or more pyruvate decarboxylase genes or pyruvate dehydrogenase genes. Also, a method of producing <SMALLCAPS>D</SMALLCAPS>-lactic acid including culturing such a yeast strain in a medium and recovering <SMALLCAPS>D</SMALLCAPS>-lactic acid.

The present invention relates to a method for isolating from the immunological gene repertoire a gene coding for a receptor having the ability to bind a preselected ligand. Receptors produced by the gene isolated by the method, particularly catalytic receptors, are also contemplated.

Polymerases from the Pol I family which are able to efficiently use ddNTPs have demonstrated a much improved performance when used to sequence DNA. A number of mutations have been made to the gene coding for the Pol II family DNA polymerase from the archaeon Pyrococcus furiosus with the aim of improving ddNTP utilisation. "Rational" alterations to amino acids likely to be near the dNTP binding site (based on sequence homologies and structural information) did not yield the desired level of selectivity for ddNTPs. However, alteration at four positions (Q472, A486, L490 and Y497) gave rise to variants which incorporated ddNTPs better than the wild type, allowing sequencing reactions to be carried out at lowered ddNTP:dNTP ratios. Wild type Pfu-Pol required a ddNTP:dNTP ratio of 30:1; values of 5:1 (Q472H), 1:3 (L490Y), 1:5 (A486Y) and 5:1 (Y497A) were found with the four mutants; A486Y representing a 150-fold improvement over the wild type. A486, L490 and Y407 are on an alpha-helix that lines the dNTP binding groove, but the side chains of the three amino acids point away from this groove; Q472 is in a loop that connects this alpha-helix to a second long helix. None of the four amino acids can contact the dNTP directly. Therefore, the increased selectivity for ddNTPs is likely to arise from two factors: 1) Small overall changes in conformation that subtly alter the nucleotide triphosphate binding site such that ddNTPs become favoured; 2) interference with a conformational change that may be critical both for the polymerisation step and discrimination between different nucleotide triphosphates.

The invention relates to therapeutic antisense oligonucleotides directed against genes coding for phosphodiesterase (PDEs) and the use of these in combination. These antisense oligonucleotides may be used as analytical tools and/or as therapeutic agents in the treatment of disease associated with reduced cellular cAMP in a patient, such as inflammatory diseases of the respiratory tract including, for example, asthma, chronic obstructive pulmonary disease (COPD), acute respiratory distress syndrome, bronchitis, chronic bronchitis, silicosis, pulmonary fibrosis, lung allograft rejection, allergic rhinitis and chronic sinusitis as well as other conditions in which an increase in cyclic AMP or a decrease in PDE levels is beneficial.

Genetic elements comprising expression vectors and a gene coding for phosphoenol pyruvate synthase is utilized to enhance diversion of carbon resources into the common aromatic pathway and pathways branching therefrom. The overexpression of phosphoenol pyruvate synthase increases DAHP production to near theoretical yields.

A plasmid which is able to be isolated from Corynebacterium thermoaminogenes, and which comprises a gene coding for a Rep protein having the amino acid sequence shown in SEQ ID NO: 4 or an amino acid sequence having homology of 90% or more to the amino acid sequence shown in SEQ ID NO: 4. and has a size of about 4.4 kb or about 6 kb, or a derivative thereof.

It is disclosed a novel enzyme present in cod liver, a DNA sequence encoding the enzyme or operative parts or biologically functional parts thereof, a novel recombinant DNA comprising the gene or tho operative or biologically functional parts thereof, a method of preparing the enzyme from cod liver and from bacteria carrying the gene, the bacteria carrying the gene per se, and the use of the protein in monitoring and/or controlling PCR or related reaction systems.

The present invention relates to a process for producing a heterologous protein by means of an E. coli strain in a fermentation medium. The process comprises fermenting an E. coli strain in a fermentation medium. The E. coli strain has a mutation in the lpp gene or in the promoter region of the lpp gene, and contains a gene coding for a heterologous protein which is functionally linked to a signal sequence coding for a signal peptide. The fermentation medium includes Ca²⁺ ions in a concentration above 4 mg/l or Mg²⁺ ions in a concentration above 48 mg/l. The E. coli strain secretes the heterologous protein into the fermentation medium. The protein is removed from the fermentation medium.

The invention discloses a method for producing tyrosol and hydroxytyrosol through heterologous metabolic pathways, wherein metabolic pathways for producing hydroxytyrosol are introduced into hosts forproducing the hydroxytyrosol; more specifically, the method comprises the following steps: producing tyrosol by efficiently expressing aminotransferase, ketoacid decarboxylase and alcohol dehydrogenase in the hosts, then introducing 4-hydroxyphenylacetate hydroxylase to produce the hydroxytyrosol. Genes coded by the enzymes are constructed on an expression plasmid or integrated to a genome. Through the method, production hosts capable of producing the hydroxytyrosol by using glucose, glycerinum and tyrosine can be prepared by introducing the genes coded by the enzymes to the hosts; meanwhile,the invention also discloses a biphasic cultivation method, so that the production of the hydroxytyrosol is more efficient.

The invention relates to an infectious arenavirus particle that is engineered to contain a genome with the ability to amplify and express its genetic information in infected cells but unable to produce further infectious progeny particles in normal, not genetically engineered cells. One or more of the four arenavirus open reading frames glycoprotein (GP), nucleoprotein (NP), matrix protein Z and RNA-dependent RNA polymerase L are removed or mutated to prevent replication in normal cells but still allowing gene expression in arenavirus vector-infected cells, and foreign genes coding for an antigen or other protein of interest or nucleic acids modulating host gene expression are expressed under control of the arenavirus promoters, internal ribosome entry sites or under control of regulatory elements that can be read by the viral RNA-dependent RNA polymerase, cellular RNA polymerase I, RNA polymerase II or RNA polymerase III. The modified arenaviruses are useful as vaccines and therapeutic agents for a variety of diseases.

The present invention relates to the technical field of plant gene engineering and concretely relates to the separation clone of paddy wide compatibility gene S5, a function validation and an application thereof for improving the paddy. The segment of the gene contains paddy wide compatibility gene coding aspartic proteinase. Subspecific Indica-Japonica paddy has strong hybrid advantage than varietal paddy, but the sterility of the subspecific Indica-Japonica hybrid restricts using the hybrid advantage thereof. The wide compatibility gene cloned by the present invention can conquer the sterility of the subspecific Indica-Japonica hybrid of the paddy and accordingly uses the strong hybrid advantage of the subspecific Indica-Japonica to further improve the output of the paddy.

A Mob⁻ plasmid having a RSF1010 replicon, comprising a gene coding for Rep protein and said plasmid has been modified to inactivate gene related to mobilization ability. The present invention also describes a bacterium having an ability to produce useful metabolites, comprising the plasmid and said bacterium lack active thymidylate synthase coded by thyA gene and thymidine kinase coded by tdk gene, and a method for producing useful metabolites, such as native or recombinant proteins, enzymes, L-amino acids, nucleosides and nucleotides, vitamins, using the bacterium.

The invention discloses a mutant human plasminogen kringle5 gene mK5 and an amplification primer of the mK5 gene, the mutant human plasminogen kringle5 gene modified by adding glutathione-S-transferase before the gene mK5, and a method for preparing protein mK5 recombinant protein of two gene codes, glutathioneS transferase (GST)-mK5 fusion protein and two proteins, wherein the mK5 gene and the GST-mK 5 gene can be applied to preparing medicaments for treating angiogenesis diseases. By the invention, the number of exogenous amino acid in the recombinant K5 protein molecules obtained by a gene engineering method is remarkably reduced, the K5 bioactivity of the obtained mK5 is improved, while the mK5 activity of the GST-mK5 fusion protein is maintained, the stability and water solubility of the protein are improved, the purification steps of an expressed product are simplified, and the purity of the product is improved.

The invention discloses a plant flavonoid synthesis regulation gene and its application. CDNA obtained through the inverse transcription of the total RNA of Epimedium brevicornum Maxim blades is treated as a template and undergoes PCR to obtain a 233bp fragment, the 233bp fragment has a very high homology with flavonoid related R2R3-MYB gene, a full-length cDNA sequence is obtained through an RACE technology and is named EsMYBA1 gene, and the sequence of the EsMYBA1 gene is represented by SEQIDNO.1. The EsMYBA1 gene codes an R2R3-MYB transcription factor which has an about 50% homology with other MYB regulation genes for controlling the flavonoid synthesis approaches, and the improvement of the expression level of the EsMYBA1 gene through a genetic engineering technology promotes the synthesis and the accumulation of anthocyanidin.

This invention relates to a preparation of a kind of lipase and the method of using the lipase to compound ester. Exactly is that amino acid sequence is SEQ ID NO:1 or its lipase of conservative mutation sequence, it also relates to the gene coding this lipase, Yarrowia lipolytica generating this lipase.

The invention discloses a method for automatically generating a cross site script (XSS) vulnerability detection parameter by using a genetic algorithm. The method realizes the algorithm according to the parameter rules of XSS vulnerabilities and the principle of the genetic algorithm by designing a set of detection parameter set, coding/decoding strategy and attack parameter database, using crossing, variation and selection operations of the genetic algorithm and designing a simulated attack operation. New parents and offspring are continuously generated through the feedback result of the simulated attack operation and the gene coding strategy, and the algorithm is circularly executed till reaching an expected algebra. The method for automatically generating the XSS vulnerability detection parameter by using the genetic algorithm is reliable and complete, has wide coverage and high execution speed, and can be applied to the field of automatically generating the XSS vulnerability detection parameter.

The present invention relates to a process for producing arachidonic acid and/or eicosapentaenoic acid in transgenic useful plants by introducing into the plant nucleic acids coding for polypeptides having Δ6-desaturase, Δ6-elongase or Δ5-desaturase activity. Furthermore, a gene coding for an ω3-desaturase is advantageously expressed in said useful plants. In another advantageous embodiment of the process, further nucleic acid sequences coding for polypeptides of fatty acid or lipid metabolism biosynthesis may be expressed in the plants. Particularly advantageous nucleic acid sequences here are those coding for a Δ8-desaturase, Δ12-desaturase, Δ15-desaturase, Δ4-desaturase, Δ9-elongase and/or Δ5-elongase activity.

The invention further relates to the use of the oils, lipids and/or fatty acids produced in the process according to the invention in feedstuffs or foodstuffs, cosmetics or pharmaceuticals.

The present invention discloses an active power distribution network frame planning method on the basis of a bi-level planning. The active power distribution network frame planning method on the basis of the bi-level planning comprises the following steps: the first step, bi-level planning model constitution; the second step, gene code; the third step, formation of an original scheme; the fourth step, individual good and bad evaluation; the fifth step, genetic operation; and the sixth step, selection of an optimal scheme. According to the invention, a model is established about an active power distribution network frame planning problem on the basis of a bi-level planning concept, and an improved genetic algorithm is used for solution. Compared with a traditional active power distribution network frame planning method, the bi-level planning concept and the improved genetic algorithm are led in the active power distribution network frame planning method on the basis of a bi-level planning to solve problems. In respect of modeling, the bi-level planning model adopted by the invention is converted to a bi-level planning problem, namely an upper layer planning problem is the construction of a line and the lower layer planning problem is minimum active power output excised amount of distributed generation under the network frame.