1349 results about "Amino acid composition" patented technology

A method for protecting a peptide from peptidase activity in vivo, the peptide being composed of between 2 and 50 amino acids and having a C-terminus and an N-terminus and a C-terminus amino acid and an N-terminus amino acid is described. In the first step of the method, the peptide is modified by attaching a reactive group to the C-terminus amino acid, to the N-terminus amino acid, or to an amino acid located between the N-terminus and the C-terminus, such that the modified peptide is capable of forming a covalent bond in vivo with a reactive functionality on a blood component. In the next step, a covalent bond is formed between the reactive group and a reactive functionality on a blood component to form a peptide-blood component conjugate, thereby protecting said peptide from peptidase activity. The final step of the method involves the analyzing of the stability of the peptide-blood component conjugate to assess the protection of the peptide from peptidase activity.

A tumor antigen that comprises, as an active ingredient, a product of the Wilms', tumor suppressor gene WT1 or a peptide composed of 7–30 contiguous amino acids containing an anchor amino acid for binding to major histocompatibility complex (MHC) class I in said amino acid sequence, and a vaccine comprising said antigen.

A method of accumulating a quantity of seeds having a desired fatty acid characteristic is provided. The method includes removing a sample from each seed in a population of seeds while maintaining the germination viability of the seeds; contacting each sample with a solvent to form a mixture comprising fatty acid methyl esters; analyzing the mixture of fatty acid methyl esters from each sample to determine the fatty acid profile of the corresponding seed; selecting seeds having at least one desired fatty acid characteristic based on the analysis of the samples removed from the seeds; cultivating plants from the selected seeds; recovering seeds from the cultivated plants, wherein the recovered seeds are a subsequent generation of the selected seeds; and repeating the operations for one or more generations of the recovered seeds to thereby accumulate the quantity of seeds having the desired fatty acid characteristic.

The invention relates to a nutrient for enhancing plant growth and a preparation method thereof. The nutrient comprises the following components in percent by weight: 20-80 percent of nucleotide salts and deoxynucleotide salts and 20-80 percent of sugar or amino acid. The preparation method comprises the following steps of: preparing nucleic acid from mycelium in side products of a fermentation plant, next, hydrolyzing the nucleic acid into the nucleotide salts and the deoxynucleotide salts, and then mixing the nucleotide salts and the deoxynucleotide salts with the sugar or amino acid. The invention has the advantages that (1) the nutrient has no toxicity, harm, residue and any adverse side effect to plants; (2) the nutrient is beneficial to increase of the yield, the income and the efficiency, and has good effects of enhancing the resistance and improving the quality for plants; and (3) the preparation method has a simple process and low cost and is easy for large-scale production and promotion. The nutrient is widely applied to plants such as grain crops, cotton crops, oil crops, tobaccos, tea trees, fruit trees, vegetables, mushrooms, Chinese medicinal plants, flowers, forests and the like.

A method is provided for producing motif-specific, context-independent antibodies which recognize a plurality of peptides or proteins within a genome that contain the same motif. The method includes the step of immunizing a host with a degenerate peptide library antigen featuring (i) a fixed target motif containing one or more invariant amino acids including at least one modified amino acid, and (ii) a plurality of degenerate amino adds flanking the motif. Motif-specific, context-independent antibodies produced by the disclosed method are also provided. The method encompasses motifs consisting of a single modified amino acid, as well as short motifs comprising multiple invariant amino acids including one or more modified amino acids, such as all or part of kinase consensus substrate motifs, protein-protein binding motifs, or other cell signaling motifs. Methods of using the antibodies, e.g. for genome-wide profiling, are also provided.