专利号:US-6451543-B1 优先权日:1998-08-31 标题:Lipid matrix-assisted chemical ligation and synthesis of membrane polypeptides 发明人:KOCHENDOERFER GERD G; HUNTER CHRISTIE L; KENT STEPHEN B H; BOTTI PAOLO 权利人:GRYPHON SCIENCES 摘要:The present invention relates to methods and compositions for lipid matrix-assisted chemical ligation and synthesis of membrane polypeptides that are incorporated in a lipid matrix. The invention is exemplified in production of a prefolded membrane polypeptide embedded within a lipid matrix via stepwise chemoselective chemical ligation of unprotected peptide segments, where at least one peptide segment is embedded in a lipid matrix. Any chemoselective reaction chemistry amenable for ligation of unprotected peptide segments can be employed. Suitable lipid matrices include liposomes, micelles, cell membrane patches and optically isotropic cubic lipidic phase matrices. Prefolded synthetic and semi-synthetic membrane polypeptides synthesized according to the methods and compositions of the invention also permit site-specific incorporation of one or more detectable moieties, such as a chromophore, which can be conveniently introduced during synthesis. The methods and compositions of the invention have multiple uses. For example, they can be used to assay ligand binding to membrane polypeptides and domains comprising a receptor, and thus are extremely useful for structure/function studies, drug screening/selection/design, and diagnostics and the like, including high-throughput applications. The methods and compositions of the invention are particularly suited for FRET analyses of previously inaccessible membrane polypeptides.
专利号:US-2003049619-A1 优先权日:2001-03-21 标题 :Methods for the synthesis of polynucleotides and combinatorial libraries of polynucleotides 发明人:DELAGRAVE SIMON; MARRS BARRY 摘要:Methods for the synthesis of polynucleotides and derivatives thereof are provided. Methods for the preparation of combinatorial libraries of polynucleotides are also provided. In addition, methods for the preparation and identification of polynucleotides having a predetermined property are provided.
专利号:US-2003159164-A1 优先权日:1998-05-29 标 题:Compositions and methods for the synthesis of fatty acids, their derivatives and downstream products 发明人:KOPCHICK JOHN JOSEPH; KELDER BRUCE; HUANG YUNG-SHENG; KIRCHNER STEPHEN J; MUKERJI PRADIP 摘要:The invention generally relates to synthesis of essential fatty acids and their derivatives, long-chain polyunsaturated fatty acids (LC-PUFAs) and eicosanoids in transfected cells and in transgenic animals.
专利号:US-2003138880-A1 优先权日:2001-08-24 标 题:Solid-phase synthesis of oligosaccharides and glycopeptides using glycosynthases 发明人:WITHERS STEPHEN G; JENSEN KNUD J; PETERSEN LARS; TOLBORG JAKOB L 权利人:UNIV BRITISH COLUMBIA 摘要:The present invention provides materials and methods for the solid-phase synthesis of oligosaccharides and glycopeptides. Such materials and methods include mutant glycosidase enzymes, or “glycosynthases,â€? chemically-derivatized acceptor molecules, and specific solid support matrices.
专利号:US-12024731-B2 优先权日:2017-05-03 标 题 :Methods and enzyme catalysts for the synthesis of non-canonical amino acids 发明人:BOVILLE CHRISTINA E; BRINKMANN-CHEN SABINE; BULLER ANDREW R; ROMNEY DAVID K; PRIER CHRISTOPHER K; KOCH PHILIPP; SCHEELE REMKES A 权利人:CALIFORNIA INST OF TECHN 摘要:The present disclosure provides methods for preparing β-substituted tryptophan compounds. The methods include: combining i) an unsubstituted indole or a substituted indole, ii) a β-substituted serine, and iii) a tryptophan synthase β-subunit (i.e., a TrpB); and maintaining the resulting mixture under conditions sufficient to form the β-substituted tryptophan. The TrpB contains at least one amino acid mutation which promotes formation of an amino-acrylate intermediate. New TrpB variants and new β-substituted tryptophan analogs are also described.
专利号:US-6066780-A 优先权日:1991-04-26 标题 :Modification of lignin synthesis in plants 发明人:BOUDET ALAIN MICHEL; INZE DIRK GUSTAAF; SCHUCH WOLFGANG WALTER 权利人:ZENECA LTD 摘要:The synthesis of lignin by plants is controlled by transformation of the plant genome with a recombinant gene construct which contains the gene specifying an enzyme critical to the synthesis of a lignin precursor, which gene may be in antisense orientation so that it is transcribed to mRNA having a sequence complementary to the equivalent mRNA transcribed from the endogenous gene thus leading to suppression of lignin synthesis. If the recombinant gene has the lignin enzyme gene in normal, or 'sense' orientation, increased production of the enzyme may occur when the insert is the full length DNA but suppression may occur it only a partial sequence is employed.