45 results about "Sugar phosphates" patented technology

Oligonucleotides with a novel sugar-phosphate backbone containing at least one 2′-arabino-fluoronucleoside and an internucleoside 3′-NH—P(—O)(OR)—O-5′ linkage, where R is a positively charged counter ion or hydrogen, and methods of synthesizing and using the inventive oligonucleotides are provided. The inventive phosphoramidate 2′-arabino-fluorooligonucleotides have a high RNA binding affinity to complementary nucleic acids and are base and acid stable.

Oligonucleotides with a novel sugar-phosphate backbone containing at least one internucleoside 3′-NHP(O)(S−)O-5′ linkage, and methods of synthesizing and using the inventive oligonucleotides are provided. The inventive thiophosphoramidate oligonucleotides were found to retain the high RNA binding affinity of the parent oligonucleotide N3′→P5′ phosphoramidates and to exhibit a much higher acid stability.

The invention relates to a small interfering nucleic acid and a pharmaceutical composition and an application thereof. The siRNA contains complementary positive-sense strand and antisense strand, wherein the positive-sense strand contains nucleotide sequences as shown in SEQ ID NO.24, SEQ ID NO.26, SEQ ID NO.28 or SEQ ID NO.30, and the antisense strand contains nucleotide sequences as shown in SEQID NO.25, SEQ ID NO.27, SEQ ID NO.29 or SEQ ID NO.31. A phosphoric acid framework and / or nucleotide pentose in a phosphoric acid-sugar framework of the siRNA has or does not have modifying groups. The invention provides a brand new efficient siRNA and a pharmaceutical composition thereof, and the siRNA can prevent and / or treat dyslipidemia effectively.

The present invention generally relates to materials and methods for exploiting glycosyltransferase reversibility for nucleotide diphosphate (NDP) sugar synthesis. The present invention provides engineered glycosyltransferase enzymes characterized by improved reaction reversibility and expanded sugar donor specificity as compared to corresponding non-mutated glycosyltransferase enzymes. Such reagents provide advantageous routes to NDP sugars for subsequent use in a variety of biomedical applications, including enzymatic and chemo-enzymatic glycorandomization.

The invention discloses a soybean fermentation metabolin. Components of the metabolin comprise amino acid and a derivative thereof, amine, sugar phosphate, nucleoside, a nucleoside derivative, organicacid and fatty acid. In addition, the invention further discloses a preparation method and application of the soybean fermentation metabolin. The soybean fermentation metabolin has the remarkable effects of improving diversity and quality of skin bacterial flora, skin water content and skin acid mantle, and is capable of avoiding loss of skin beneficial substances, maintaining balance of the skinbacterial flora, reinforcing nonspecific immune response, preventing skin infection and inflammation, and preventing skin related diseases, such as pruritus, acne, scurf, rubeosis and drying.

A method for producing a pyrimidine nucleoside compound includes reacting a sugar phosphate and pyrimidine base derivative using an enzyme having cytosine nucleoside phosphorylase activity, the pyrimidine base derivative being represented by general formula (I): (wherein R1 represents an amino group that may be replaced with an acyl group having an alkyl group of 1 to 3 carbon atoms or an alkyl group of 1 to 3 carbon atoms, an alkyl group of 1 to 3 carbon atoms, or a thiol group; R2 represents an amino group, a thiol group, a hydroxyl group, or a hydrogen atom; R3 represents an alkyl group of 1 to 3 carbon atoms that may be replaced with a hydroxyl group, an amino group, or a hydrogen atom; R4 represents a hydroxyl group or a hydrogen atom; when R1 is an amino group, when R2 is a hydroxyl group, and when R4 is a hydrogen atom; R3 is neither an alkyl group of 1 to 3 carbon atoms nor a hydrogen atom).

A refolding agent and refolding method which make it possible to produce high-purity proteins in high productivity. The refolding agent includes a phosphorus-containing compound (A) and an oxycarbonyl group-containing compound (B). The refolding method includes the step of treating the unfolded protein with the refolding agent. As the compound (A), there may be mentioned at least one species selected from inorganic phosphoric acids, alkyl phosphate esters, sugar phosphate esters, and salts of these, and as the compound (B), there may be mentioned at least one species selected from formic acid, acetic acid, propionic acid, lactic acid, tartaric acid, and salts of these.

The invention belongs to the technical field of inorganic materials and analysis and particularly relates to a pretreatment method for enrichment and solid-phase derivatization of sugar phosphate substances by a metal ion affinity chromatography material (SiO2@PD-Ti<4+>). The pretreatment method comprises the following steps: firstly, enriching the sugar phosphate substances on SiO2@PD-Ti<4+> microspheres by a metal chelating action; secondly, carrying out solid-phase derivatization on enriched sugar phosphate substances. According to the method, retention and separation degree of the sugar phosphate substances on reversed phase liquid chromatography can be improved, and the mass spectrometric detection sensitivity of the sugar phosphate substances with low abundance can be improved. The pretreatment method disclosed by the invention has the advantages of simple and quick pretreatment process, good repeatability, low detection limit and the like.

The invention discloses an analysis method for a variety of sugar phosphate compounds including endogenous trehalose-6-phosphate in a plant sample. The method comprises the following steps of: extracting the endogenous sugar phosphates through a solvent; adsorbing and removing the hydrophobic impurities in the extracted solution through a reversed-phase SPE column; using the diazo groups in a derivatization reagent to carry out derivatization reaction on the phosphate groups common to the sugar phosphate compounds; and in combination with the liquid chromatography and mass spectrometry, realizing the separation detection of the endogenous sugar phosphate isomers in the plant sample. The analysis method is simple, accurate and high in throughput, can achieve the baseline separation of the sugar phosphate isomers on a hydrophilic chromatographic column and guarantee the higher detection sensitivity, and finally can realize the separation detection of the endogenous sugar phosphates in amicroplant tissue sample.

Disclosed are genetically engineered microbial cells for the production of a carbohydrate of interest, wherein the microbial cells possess an increased intracellular availability of at least one sugar phosphate, and produce the carbohydrate of interest when being cultivated in a culture medium containing a mixed monosaccharide feedstock as main carbon and energy source. Also disclosed is a fermentative method of producing a carbohydrate of interest by cultivating said genetically engineered microbial cell in the presence of a mixed monosaccharide feedstock as main carbon and energy source.

A composition comprising at least two glycoalkaloids of formula I: wherein: either one or both of the dotted lines represents a double bond, and the other a single bond, or both represent single bonds; A: represents a radical selected from the following radicals of general formulae (II) to (V): each of R1 is a radical separately selected from the group consisting of hydrogen, amino, oxo and OR4; each of R2 is a radical separately selected from the group consisting of hydrogen, amino and OR4; each of R3 is a radical separately selected from the group consisting of hydrogen, carbohydrate and a carbohydrate derivative; “X” is a radical selected from the group comprising —CH2—, —O— and —NH2—; and wherein the compound includes at least one R4 group that is a carbohydrate or a derivative thereof selected from the group comprising glyceric aldehyde, glycerose, erythrose, threose, ribose, arabinose, xylose, lyxose, altrose, allose, gulose, mannose, glucose, idose, galactose, talose, rhamnose, dihydroxyactone, erythrulose, ribulose, xylulose, psicose, fructose, sorbose, tagatose, and other hexoses, heptoses, octoses, nanoses, decoses, deoxysugars with branched chains, (e.g. apiose, hamamelose, streptose, cordycepose, mycarose and cladinose), compounds wherein the aldehyde, ketone or hydroxyl groups have been substituted (e.g. N-acetyl, acetyl, methyl, replacement of CH2OH), sugar alcohols, sugar acids, benzimidazoles, the enol salts of the carbohydrates, saccharinic acids, sugar phosphates; wherein the ratio of said glycoalkaloids is between 6:1 and 1:6 and on the proviso that when the glycoalkaloids are solamargine and solasonine and they are present in a 1:1 ratio the solamargine and solasonine are isolated.

A hygiene article having calcium sugar phosphate is provided. The calcium sugar phosphate reduces the production of Toxic Shock Syndrome Toxin-1 (TSST-1) by Staphylococcus aureus.

Plant nucleotide pyrophosphatase / phosphodiesterase (NPPase), method of production, use in the manufacture of testing devices and in the production of transgenic plants. NPPase is an enzyme that catalyses the hydrolysis of a wide range of small molecules with phosphodiester and phosphosulphate bonds, in particular ADPG (adenosine diphosphate glucose) and APS (adenosine 5′-phosphosulphate). The enzyme obtained from plant extracts is used in assay devices for determining levels of nucleoside diphosphate sugars, based either on the sugar-1-phosphate released, or on the nucleoside monophosphate, both of which are products formed by the reaction catalysed by NPPase, as well as the detection of sulphonucleotides such as 3′-phosphoadenosine 5′-phosphosulphate (PAPS) and APS. The amino acid sequence of the enzyme is also described, as well as the nucleotide sequence of a complete cDNA and another incomplete cDNA. Finally, it describes the production of transgenic plants that overexpress NPPase and that have a high content of sugars, low content of starch and cell-wall polysaccharides and high resistance to high concentrations of salts and high temperature.

The invention provides an iron-based hydroxide-low molecular weight sugar phosphate binder as well as a preparation method and application thereof. Specifically, the invention provides a phosphate binder which comprises an iron-based hydroxide and low molecular weight sugar, wherein the number of monosaccharide units of the low molecular weight sugar is 3-20, and based on the total weight of the phosphate binder, the mass ratio of the iron is 2-45wt%. Experiments prove that the phosphate binder has an obvious effect of lowering the serum phosphate level. Therefore, the phosphate binder has wide application prospects.

The invention relates to methods for the treatment of tumors and / or for immune suppression and / or sepsis by modulating the association of the glycolysis enzyme complex / M2-PK and / or by inhibition of transaminases and / or separation of the binding of the malate dehydrogenase to p36 comprising administering a pharmaceutical composition comprising a substance selected from the group consisting of amino acids, amino acid analogs, sugar phosphates, sugar phosphate analogs, and mixtures of said substances.

The invention discloses a method for biologically preparing mannoglycerate, and relates to construction of an in-vitro multi-enzyme catalytic reaction system. The method comprises three enzymes, namely mannokinase, mannose-1-phosphate glycosyltransferase and mannoglycerate synthetase, and mannose and glycerate are converted to synthesize the mannoglycerate. The invention further discloses a construction method of recombinant corynebacterium glutamicum. The recombinant strain is applied to fermentation synthesis of the mannoglycerate, the mannoglycerate product is synthesized by taking the mannose and the glycerate as raw materials through a fermentation method, and the obtained mannoglycerate can be applied to the fields of foods, medicines, cosmetics and the like.

The invention discloses a method for improving yield of bacillus subtilis acetylglucosamine. According to the invention, knockout verification is carried out to obtain a result that key phosphatase YwpJ can catalyze GlcNAc-6-P to take a dephosphorylation effect to generate GlcNAc; by overexpressing the phosphatase YwpJ, excessive accumulation of intracellular sugar phosphates is reduced, a toxic effect of the excessively accumulated sugar phosphates on cells is eliminated, and the sugar phosphates are effectively secreted out of the cells, so that cell growth is improved; and GlcNAc syntheticprecursor degradation pathway key genes murQ and nagBB are further knocked out, degradation of a precusor substance is blocked, waste of carbon flow is reduced, more carbon flow is enabled to be transformed into products, a GlcNAc yield of a final recombinant strain FMIP34 reaches 26.1g / L and is increased by 61.1%, and a transformation rate of the GlcNAc reaches 0.483g per gram of glucose.

The invention relates to a novel internal standard substance for detecting amino acid, organic acid or sugar phosphate metabolite in a sample. The invention discloses a novel compound suitably used asthe internal standard substance during the detection process of the amino acid, organic acid or sugar phosphate metabolite in a to-be-detected sample, and builds a detection method. By the internal standard substance and the detection method, the detection accuracy of a fermentation metabolite can be effectively improved, and the internal standard substance is simple and convenient in process andrelatively low in cost.

The present invention generally relates to materials and methods for exploiting glycosyltransferase reversibility for nucleotide diphosphate (NDP) sugar synthesis. The present invention provides engineered glycosyltransferase enzymes characterized by improved reaction reversibility and expanded sugar donor specificity as compared to corresponding non-mutated glycosyltransferase enzymes. Such reagents provide advantageous routes to NDP sugars for subsequent use in a variety of biomedical applications, including enzymatic and chemoenzymatic glycorandomization.

The present disclosure relates to a chitosan solution neutralized with amino-sugar carbonate buffering solution or amino-sugar phosphate buffering solution or phosphorylated aminosugar buffering solution. The resulting themogelling chitosan composition is highly biocompatible, isotonic and has the ability to rapidly turn into gel upon heating to the body temperature. It provides a novel chitosan-based composition to suitable for drug delivery, cell delivery and repair or regeneration of tissues and organs as well as other clinical treatment.

Provided is a siRNA that inhibits RRM2 gene expression. A sense-strand base sequence of the siRNA is as shown in SEQ ID NO:2, an antisense-strand base sequence of the siRNA is as shown in SEQ ID NO:3, and a phosphate-sugar backbone of the siRNA may further have a modified group; also provided is a pharmaceutical composition comprising the siRNA, which can inhibit tumor cell proliferation and facilitate tumor cell apoptosis, thereby inhibiting growth of tumor tissues.