专利号:US-5374541-A 优先权日:1993-05-04 标 题 :Combined use of β-galactosidase and sialyltransferase coupled with in situ regeneration of CMP-sialic acid for one pot synthesis of oligosaccharides 发明人:WONG CHI-HUEY; GAETA FEDERICO C A 权利人:SCRIPPS RESEARCH INST; CYTEL CORP 摘要:A single reaction vessel process for the synthesis of a sialylated galactoside is disclosed. The synthesis utilizes a β-galactosidase to catalyze the reaction of a galactose-containing substrate and an acceptor to form a new galactosyl glycoside that is then sialylated using a cyclic multienzyme synthesis system to form CMP-sialic acid that sialylates the formed galactosyl glycoside in the presence of an α-sialyltransferase. The value of K m /V max for the formed galactosyl glycoside as a substrate for the α-sialyltransferase is less than one-third the K m /V max value for the galactose-containing substrate for that α-sialyltransferase.
专利号:US-8314209-B2 优先权日:2007-12-12 标 题 :Lipid-assisted synthesis of polymer compounds and methods for their use 发明人:RAJAMANI SUDHA; OLASAGASTI FELIX; DEAMER DAVID W; BENNER SEICO 权利人:RAJAMANI SUDHA; OLASAGASTI FELIX; DEAMER DAVID W; BENNER SEICO; UNIV CALIFORNIA 摘要:The invention herein disclosed provides for methods for the synthesis of polymers from monomers. In particular the method provides for the synthesis of polynucleotides from mononucleotides in the absence of catalytic enzymes. The method comprises providing an aqueous solution having a plurality of phospholipid molecules and monomer molecules; subjecting the aqueous solution to fluctuating temperature conditions; subjecting the aqueous solution to fluctuating cycles of drying and hydrating conditions; subjecting the aqueous solution to fluctuating [H + ] conditions; the fluctuating conditions thereby allowing formation of a chemical bond between at least two monomers to create a polymer. The invention is of particular use in the fields of molecular biology, structural biology, cell biology, molecular switches, molecular circuits, and molecular computational devices, and the manufacture thereof.
专利号:WO-2004113530-A1 优先权日:2003-06-18 标题:Polynucleotide for synthesis of labeled protein 发明人:NAKA DAIJI; NAKANO HIROSHI; SHIRATORI MIWA; KOBAYASHI TERUAKI; SUZUKI KATSUHIKO; HASHIMOTO HIDEMI; SASAKI TOORU 权利人:MITSUBISHI CHEM CORP; NAKA DAIJI; NAKANO HIROSHI; SHIRATORI MIWA; KOBAYASHI TERUAKI; SUZUKI KATSUHIKO; HASHIMOTO HIDEMI; SASAKI TOORU 摘要:A process for producing a labeled protein, comprising translating a gene template in the presence of a labeled compound having a label portion consisting of a labeled substance and an acceptor portion consisting of a compound capable of binding to the C-terminus of protein synthesized by a translation system. In particular, there are provided a polynucleotide for use in synthesis of labeled protein characterized by having the capability of enhancing labeling efficiency through addition to the 3’ end of a base sequence coding for target protein within the gene template and provided a process for producing a labeled protein that is carried out with the use of the polynucleotide.
专利号:US-5352670-A 优先权日:1991-06-10 标题:Methods for the enzymatic synthesis of alpha-sialylated oligosaccharide glycosides 发明人:VENOT ANDRE P; UNGER FRANK M; KASHEM MOHAMMED A; BIRD PAUL; MAZID M ABDUL 权利人:ALBERTA RES COUNCIL 摘要:Disclosed are methods for the enzymatic synthesis of alpha-sialylated oligosaccharide glycosides. Specifically, in the disclosed methods, sialyltransferase is activated to transfer an analogue of sialic acid, employed as its CMP-nucleotide derivative, to an oligosaccharide glycoside. The analogue of sialic acid and the oligosaccharide employed in this method are selected to be compatible with the sialyltransferase employed.
专利号:US-2002161219-A1 优先权日:2001-02-21 标 题:Non-enzymatic large scale synthesis of RNA 发明人:KANAVARIOTI ANASTASSIA; DEAMER DAVID W; MONNARD PIERRE-ALAIN M; BERNASCONI CLAUDE F 摘要:This invention pertains to the development of methods that accomplish efficient, non-enzymatic, nucleic acid-directed (e.g. RNA-directed) nucleic acid (e.g. RNA) synthesis. In certain embodiments the methods provide conditions that favor oligouridylate synthesis with excellent yield and, at least, up to 30% regioselectivity favoring the RNA linkage. The methods preferably involve contacting, in the presence of lead ions (Pb 2+ ) and/or tin ions (Sn 2+ ) and, optionally, magnesium ions (Mg 2+ ), a template nucleic acid with a nucleotide derivatized with an imidazolide.
专利号:US-2021246476-A1 优先权日:2020-01-31 标 题:Biosynthesis of preparing nicotinamide mononucleotide and derivatives thereof 发明人:ZHANG YI HENG PERCIVAL 权利人:ZHANG YI HENG PERCIVAL 摘要:A method of making nicotinamide mononucleotide (NMN), nicotinamide mononucleotide derivatives, or mixtures thereof is disclosed. The method involves the in vitro artificial enzymatic pathways comprised: the generation of alpha-D-ribose-1-phosphate from numerous substrates followed by the synthesis of nicotinamide mononucleotide catalyzed by nicotinamide riboside phosphorylase and nicotinamide riboside kinase or the generation of 5-phospho-alpha-D-ribose-1-diphosphate from nucleotides followed by the synthesis of nicotinamide mononucleotide catalyzed by nicotinamide phosphoribosyltransferase. The multiple enzymes were reconstituted in one pot, wherein in-situ removal of byproducts that can be converted to other non-inhibitory chemicals with supplementary enzymes push the overall biotransformation toward the synthesis of nicotinamide mononucleotide. Furthermore, nicotinamide mononucleotide can be converted to its derivatives—nicotinamide adenine dinucleotide and nicotinamide adenine dinucleotide phosphate.
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