282 results about "Synthetic gene" patented technology

Compositions and methods for conferring pesticidal activity to bacteria, plants, plant cells, tissues and seeds are provided. Compositions containing a synthetic nucleotide sequence encoding a Cry1Ac protein are provided. The coding sequences can be used in DNA constructs or expression cassettes for transformation and expression in plants and bacteria. Compositions also include transformed bacteria, plants, plant cells, tissues, and seeds. In particular, isolated pesticidal nucleic acid molecules are provided, wherein the nucleotide sequences are set forth in SEQ ID NO:1, 2, 3, 4, 5 or 6, as well as variants and fragments thereof.

The present invention relates generally to a method of modifying gene expression and to synthetic genes for modifying endogenous gene expression in a cell, tissue or organ of a transgenic organism, in particular a transgenic animal or plant. More particularly, the present invention utilises recombinant DNA technology to post-transcriptionally modify or modulate the expression of a target gene in a cell tissue, organ or whole organism, thereby producing novel phenotypes. Novel synthetic genes and genetic constructs which are capable repressing delaying or otherwise reducing the expression of an endogenous gene or a target gene in an organism when introduced thereto are also provided.

The invention relates to a novel elongase gene with the sequences stated in sequence SEQ ID NO:1, SEQ ID NO: 3, SEQ ID NO: 5 and SEQ ID NO: 7 or their homologs, derivatives or analogs, to a gene construct comprising this gene or its homologs, derivatives and analogs, and to its use. The invention also relates to vectors or transgenic organisms comprising an elongase gene with the sequence SEQ ID NO:1, SEQ ID NO: 3, SEQ ID NO: 5 and SEQ ID NO: 7 or its homologs, derivatives and analogs. The invention furthermore relates to the use of the elongase gene sequences alone or in combination with further elongases and / or further fatty acid biosynthesis genes. The present invention relates to a novel elongase gene with the sequence SEQ ID NO:1 or its homologs, derivatives and analogs. Furthermore, the invention relates to a process for the preparation of polyunsaturated fatty acids and to a process for introducing DNA into organisms which produce large amounts of oils and, in particular, oils with a high content of unsaturated fatty acids. Moreover, the invention relates to an oil and / or a fatty acid preparation with a higher content of polyunsaturated fatty acids with at least two double bonds and / or a triacylglycerol preparation with a higher content of polyunsaturated fatty acids with at least two double bonds.

The invention relates to a novel elongase gene with the sequences stated in sequence SEQ ID NO:1, SEQ ID NO: 3, SEQ ID NO: 5 and SEQ ID NO: 7 or their homologs, derivatives or analogs, to a gene construct comprising this gene or its homologs, derivatives and analogs, and to its use. The invention also relates to vectors or transgenic organisms comprising an elongase gene with the sequence SEQ ID NO:1, SEQ ID NO: 3, SEQ ID NO: 5 and SEQ ID NO: 7 or its homologs, derivatives and analogs. The invention furthermore relates to the use of the elongase gene sequences alone or in combination with further elongases and / or further fatty acid biosynthesis genes. The present invention relates to a novel elongase gene with the sequence SEQ ID NO:1 or its homologs, derivatives and analogs.Furthermore, the invention relates to a process for the preparation of polyunsaturated fatty acids and to a process for introducing DNA into organisms which produce large amounts of oils and, in particular, oils with a high content of unsaturated fatty acids. Moreover, the invention relates to an oil and / or a fatty acid preparation with a higher content of polyunsaturated fatty acids with at least two double bonds and / or a triacylglycerol preparation with a higher content of polyunsaturated fatty acids with at least two double bonds.

The invention includes materials and methods to generate numerous small RNAs from one polynucleotide construct (synthetic gene) to facilitate RNA-guided multiplex genome editing, modification, inhibition of expression and other RNA-based technologies. The synthetic gene / polynucleotide construct encodes polycistronic RNA components separated by tRNAs, and preferably also includes regulatory components such as a promoter or terminator to form an expression cassette. Once transcribed in a cell, the transcript is processed by the cell to multiple RNA molecules by the endogenous tRNA processing system. The system can be used for any RNA based gene manipulation method including RNA-mediated genome editing, artificial microRNA mediated gene silencing, small RNA mediated genetic manipulation, double-stranded RNA mediated gene silencing, antisense mechanisms and the like.

Methods and compositions are provided for assembly of large nucleic acids where the assembled large nucleic acids lack internal sequence modifications made during the assembly process.

A new approach in the field of plant gums is described which presents a new solution to the production of hydroxyproline(Hyp)-rich glycoproteins (HRGPs), repetitive proline-rich proteins (RPRPs) and arabinogalactan-proteins (AGPs). The expression of synthetic genes designed from repetitive peptide sequences of such glycoproteins, including the peptide sequences of gum arabic glycoprotein (GAGP), is taught in host cells, including plant host cells.

Provided are methods for calculating codon pair translational kinetics values, creating a synthetic gene for expression in a host organism, and providing codon pair translational kinetic values. The methods typically are directed to refinement of statistical observed versus expected codon pair frequencies using one of several factors such as amino acid sequence homology, secondary or tertiary structural considerations, and empirical measurements. In some synthetic genes codon pairs are predicted not to cause a translational pause in the host organism, thereby providing a polynucleotide sequence encoding the desired polypeptide with desired translational kinetics properties. The methods can be performed using multiple parameter nucleotide sequence optimization methods, such as branch-and-bound methods for nucleotide sequence refinement.

This invention is directed to preparation and expression of synthetic genes encoding polypeptides containing protective epitopes of botulinum neurotoxin (BoNT). The invention is also directed to production of immunogenic peptides encoded by the synthetic genes, as well as recovery and purification of the immunogenic peptides from recombinant organisms. The invention is also directed to methods of vaccination against botulism using the expressed peptides.

Synthetic unaltered and altered peptides comprising sequences of at least one immunogenic epitope cluster (IEC) of at least one human autoantigen related to multiple sclerosis (MS) and at least one nonameric core sequence which fits into the MS-relevant HLA-DR / DQ molecule and is flanked by 2-5 amino acids at its N- and C-termini, are provided. The alteration is preferably by substituting 1 to 3 TCR contact residues by Ala. The autoantigen is preferably MOG, MBP, OSP, MOBP and PLP. Polypeptides comprising at least two such peptides of a sole autoantigen or at least one peptide of two different autoantigens, and synthetic genes encoding them, are also provided, as well as pharmaceutical compositions for treatment and diagnostic of MS.

Disclosed herein is a method for synthesizing a desired nucleic acid sequence. The method comprises dividing the desired sequence into a plurality of partially overlapping segments; optimizing the melting temperatures of the overlapping regions of each segment to disfavor hybridization to the overlapping segments which are non-adjacent in the desired sequence; allowing the overlapping regions of single stranded segments which are adjacent to one another in the desired sequence to hybridize to one another under conditions which disfavor hybridization of non-adjacent segments; and filling in, ligating, or repairing the gaps between the overlapping regions, thereby forming a double-stranded DNA with the desired sequence. Also disclosed is a method for preventing errors in the synthesis of the nucleic acid sequence.

Belonging to the genetic engineering and fermentation engineering field, the invention provides a method for increasing streptomyces secondary metabolite yield. The method includes the steps of: utilizing an induction promoter to control the expression of a target secondary metabolite biosynthetic gene cluster, and determining the optimal induction condition by means of a response surface model; conducting transcriptome analysis to screen a physiological promoter with consistent control behavior to the induction promoter; and finally, preparing plasmid utilizing the physiological promoter to control the expression of the target secondary metabolite biosynthetic gene cluster, and transferring the plasmid into host bacteria for fermentation. The method provided by the invention can get rid of dependency on an inducer, and realizes self-regulation of target biosynthetic gene cluster expression and increase of the target product yield. The method provided by the invention regulates the expression of secondary metabolite biosynthetic gene cluster from the dimensions of time and intensity, makes the expression fit the physiological metabolic behaviors of the host, and is very important for increasing the yield of the target secondary metabolite in streptomyces.

The invention discloses a microcystin test chip. The microcystin test chip comprises a substrate and probes combined on the substrate, wherein the probes are six specific probes related to six conserved region sequences in a microcystin synthetic gene cluster. The invention also discloses a kit provided with the test chip and a method for detecting microcystin by utilizing the kit. Compared with the prior art, the invention has the advantages that: a biochip and a molecular hybridization technology are combined, the fussy polymerase chain reaction (PCR) amplification is rejected, the detection time is shortened, and the high-throughput and high-sensitivity rapid detection can be performed.