摘要:
The invention relates to a method of generating or increasing a pathogen resistance in plants by reducing the expression of at least one stomatin polypeptide or a functional equivalent thereof. The invention relates to novel nucleic acid sequences coding for a Hordeum vulgare stomatin (HvSTM1) polynucleotide and describes homologous sequences (STM1) thereof, and to their use in methods for obtaining a pathogen resistance in plants, and to nucleic acid constructs, expression cassettes and vectors which comprise these sequences and which are suitable for mediating a fungal resistance in plants. The invention furthermore relates to transgenic organisms, in particular plants, which are transformed with these expression cassettes or vectors, and to cultures, parts or transgenic propagation material derived therefrom.
摘要:
The present invention relates to a process for the production leucine and/or isoleucine and/or valine in a microorganism, a plant cell, a plant, a plant tissue or in one or more parts thereof. The invention furthermore relates to nucleic acid molecules, polypeptides, nucleic acid constructs, vectors, antisense molecules, antibodies, host cells, plant tissue, propagation material, harvested material, plants, microorganisms as well as agricultural compositions and to their use.
摘要:
A nucleic acid molecule is disclosed as containing a first nucleic acid sequence comprising a nucleotide sequence that encodes γ-zein protein, or a fragment thereof capable of directing and retaining a protein towards the endoplasmic reticulum (ER) of a plant cell; a second nucleic acid sequence containing a nucleotide sequence that encodes an amino acid sequence that is specifically cleavable by enzymatic or chemical means; and a third nucleic acid sequence containing the nucleotide sequence that encodes a peptide or protein of interest. Methods of using this nucleic acid molecule for transforming host plant cells and producing the peptide or protein of interest are also disclosed.
摘要:
A method of continuously and quickly degrading a protein into peptides and/or amino acids in supercritical water or high-pressure hot water at around the supercritical point. Namely, a method of continuously and quickly producing peptides and/or amino acids from a protein which comprises using a flow-through type reactor consisting of a substrate-introducing line for supplying a substrate, a pre-heating oven for supplying high-pressure hot water, a reaction oven for heating a liquid reaction mixture and reacting the same and a cooling unit for cooling the liquid reaction mixture, and continuously hydrolyzing the substrate protein supplied into the reaction oven in supercritical water or high-pressure hot water at around the supercritical point under a pressure of 22.05 MPa or above and at a temperature of 375?C or above; and a method of continuously and quickly hydrolyzing a protein by the above-described process. By using this method, it is possible to obtain preparations which are substantially different from the products obtained by the batch method and contaminated with little secondary and tertiary reaction products. Thus, this method is highly useful particularly in, for example, production of physiologically active peptides and pretreatment for the evaluation and analysis of amino acid composition.
摘要:
The invention provides a novel stabilizing agent for enhancing stability of a specific-binding-pair-forming substance during storage and a novel blocking agent for preventing non-specific adsorption for use in an assay employing a specific-binding-pair-forming substance. Specifically, the invention provides a stabilizing agent for a specific-binding-pair-forming substance, the agent containing a plant-derived polypeptide as an active ingredient; a blocking agent for preventing non-specific adsorption in an assay employing a specific-binding-pair-forming substance; a composition for use in an assay employing a specific-binding-pair-forming substance, the composition containing the specific-binding-pair-forming substance and the stabilizing agent or the blocking agent; and a kit for use in an assay employing a specific-binding-pair-forming substance, the kit containing a stabilizing agent or a blocking agent for preventing non-specific adsorption.
摘要:
The present invention provides novel engineered derivatives of green fluorescent protein (GFP) which have an amino acid sequence which is modified by amino acid substitution compared with the amino acid sequence of wild type Green Fluorescent Protein. The modified GFPs exhibit enhanced fluorescence relative to wtGFP when expressed in non-homologous cells at temperatures above 30 DEG C, and when excited at about 490 nm compared to the parent proteins, i.e. wtGFP. An example of a preferred protein is F64L-S175G-E222G-GFP. The modified GFPs provide a means for detecting GFP reporters in mammalian cells at lower levels of expression and/or increased sensitivity relative to wtGFP. This greatly improves the usefulness of fluorescent proteins in studying cellular functions in living cells.
摘要:
It is intended to construct a reaction system whereby a peptide produced in an in vitro peptide synthesis system can be efficiently isolated at a high purity from the reaction system, and, at the same time, to resolve the problem of the consumption of energy in the reaction system. A process for producing a peptide or a peptide derivative by using a reaction system of transcribing a DNA into an RNA and then translating the RNA produced or a reaction system of translating an RNA in vitro characterized in that a part or all of protein components constituting the transcription/ translation reaction system are labeled with one of a pair of substances adhering to each other and the other substance is used as an adsorbent for capturing said labeled protein components after translating.