摘要:
Transgenic, monocotyledonous plants (A) of the genera Triticum, Hordeum, Avena, Secale, Penisetum or Sorghum that contain thaumatin (I), are new.. Independent claims are also included for: (1) a vector containing a construct or expression cassette that includes at least one polynucleotide (II) that encodes (I), at least one endosperm-specific promoter (III) and optionally a signal sequence; (2) transformed plant cells, tissue and protoplasts that, after transformation, contain (II) integrated stably into the genome; (3) protein (Ia) obtained from (A) and having Seq. (28); (4) polynucleotide (IIa) that encodes (Ia) and has Seq. (29); (5) grain/seed of (A) containing at least 0.5, especially 3 or more, g (I)/kg; (6) malted or milled product, particularly powder or extract, containing (I) and prepared from (A); (7) instant powder comprising the product of (6); (8) animal or human food or feed containing the grain/seed of (5) or products of (6); and (9) dietetic or low-calorie foods, and taste intensifiers, that contain products of (8).
摘要:
The invention relates to a method for extracting a desired protein from a transgenic host organism, whereby the expression of the gene that codes for this protein is firstly carried out after the host organism has been harvested. The inventive method is characterized in that: (a) the transgenic host organism contains the gene that codes for the desired protein in such a way that the expression thereof is firstly carried out in the presence of a chemical inductor, and; (b) the gene is brought into contact with the inductor via the phase surrounding the host organism after the host organism has been harvested. The invention also relates to a host organism that is suited for carrying out said method.
摘要:
Isolated polynucleotides are provided. Each of the isolated polynucleotides comprise a nucleic acid sequence encoding a polypeptide having an amino acid sequence at least 80% homologous to SEQ ID NO: 26, 106, 107, 109, 110, 112, 114, 115, 118, 119, 122, 123, 124, 126, 95 or 96, wherein the polypeptide is capable of regulating cotton fiber development. Also provided are methods of using such polynucleotides for improving fiber quality and/or yield of a fiber producing plant, as well as methods of using such polynucleotides for producing plants having increased biomass/vigor/yield.
摘要:
The present invention relates to the use of a class of genes called oil body protein genes that have unique features. The discovery of these features allowed the invention of methods for the production of recombinant proteins wherein a protein of interest can be easily separated from other host cell components. The invention is further exemplified by methods for exploitation of the unique characteristics of the oil body proteins and oil body genes for expression of polypeptides of interest in many organisms, particularly plant seeds. Said polypeptides may include but are not limited to: seed storage proteins, enzymes, bioactive peptides, antibodies and the like. The invention can also be modified to recover recombinant polypeptides fused to oleosins from non-plant host cells. Additionally the invention provides a method of using recombinant proteins associated with seed oil bodies released during seed germination for expression of polypeptides that afford protection to seedlings from pathogens. Finally, the persistent association of oil body proteins with the oil body can be further utilized to develop a biological means to create novel immobilized enzymes useful for bioconversion of substrates.
摘要:
The present invention pertains to novel cocoa polypeptides having a molecular weight of about 10 and 14 kDa and being derived from a 69 KDa precursor. In particular, the present invention relates to the production of said polypeptides via recombinant means and the use of said polypeptides or fragments thereof for the production of cocoa/chocolate flavour.
摘要:
The invention relates to a method for influencing the content of sinapine in transgenic plant cells and plants. The invention in particular relates to the inhibition of the enzymatic activity of a UDP-glucose: sinapoyl glucose transferase (SGT) in transgenic plant cells. The invention further relates to nucleic acid molecules containing a DNA sequence which codes for a protein with the enzymatic activity of an SGT. The invention furthermore relates to transgenic plants and plant cells, comprising the above nucleic acid molecules, as a result of which the above contain a reduced sinapine content in comparison with wild type plants or cells and the agricultural products and propagating material of the transgenic plants.
摘要:
cDNAs encoding myrcene synthase, (-)-limonene synthase and (-)-pinene synthase from Grand fir (Abies grandis) haven been isolated and sequenced, and the corresponding amino acid sequences have been determined. Accordingly, isolated DNA sequences (SEQ ID NO:1; SEQ ID NO:3 and SEQ ID NO:5) are provided which code for the expression of myrcene synthase (SEQ ID NO:2), (-)-pinene synthase (SEQ ID NO:4) and (-)-limonene synthase (SEQ ID NO:6) , respectively, from Grand fir (Abies grandis). In other aspects, replicable recombinant cloning vehicles are provided which code for myrcene synthase, (-)-limonene synthase and (-)-pinene synthase, or for a base sequence sufficiently complementary to at least a portion of myrcene synthase, (-)-limonene synthase or (-)-pinene synthase DNA or RNA to enable hybridization therewith. In yet other aspects, modified host cells are provided that have been transformed, transfected, infected and/or injected with a recombinant cloning vehicle and/or DNA sequence encoding myrcene synthase, (-)-limonene synthase or (-)-pinene synthase. Thus, systems and methods are provided for the recombinant expression of the aforementioned recombinant monoterpene synthases that may be used to facilitate their production, isolation and purification in significant amounts. Recombinant myrcene synthase, (-)-limonene synthase or (-)-pinene synthase may be used to obtain expression or enhanced expression of myrcene synthase, (-)-limonene synthase or (-)-pinene synthase in plants in order to enhance the production of monoterpenoids, or may be otherwise employed for the regulation or expression of myrcene synthase, (-)-limonene synthase and (-)-pinene synthase, or the production of their products.
摘要:
The present invention relates to the use of a variety of methods for generating functional thioredoxin reductase variants in which at least one physical, chemical or biological property of the variant is altered in a specific and desired manner when compared to the wild-type protein.
摘要:
The present invention discloses genetically engineered plants which display altered structure or morphology. The transgenic plants express a cell wall modulation transgene or gene construct that results in the altered structure or morphology. The altered structure or morphology can be associated with, for example, altered biomass, growth, yield, greater or less resistance to biodegradation, more or less digestible to ruminants, altered cellulose content, larger leaves/normal hypocotyls or smaller leaves/longer hypocotyls, etc. compared to a non-transgenic plant of the same species. The cell wall modulation transgene can be any cellulose binding domain, a cellulose binding protein, or a cell wall modifying protein or enzyme such as endoxyloglucan transferase, xyloglucan endo-transglycosylase, an expansin, cellulose synthase, or a novel isolated endo-1,4- beta -glucanase of Arabidopsis thaliana. The invention also discloses transgenic plants containing a gene construct comprising a promoter operably linked to the cell wall modulation protein or polypeptide gene and may further comprise a sequence encoding a secretion signal peptide. In particular, the invention discloses transgenic plants containing a gene construct comprising the cell promoter, operably linked to the cell signal peptide and any cellulose binding domain.
摘要:
A new type of transgene system is disclosed which allows efficient protein expression in a target host such as a plant, but avoids the undesirable result of the migration of the transgene into related host systems and/or to the environment via the pollen. The methods described herein may also be applied to the expression of virtually any protein of interest (e.g. a toxic protein) in eukaryotic (yeast, insect, mammalian cells, etc.) and prokaryotic (E. coli, etc.) organisms.