Glicociência

<p>N-Acetyl D-mannosamine (ManNAc) is an aldohexose (2-acetamido-2-deoxymannose) in which the axial hydroxyl group at position 2 is replaced by a N-acetyl group (Collins, 2006). It has been reported that N-acetyl D-mannosamine supplementation, may provide novel means to break the link between obesity and hypertension (Peng, 2019). N-Acetyl-D-mannosamine and N-acetyl-D-glucosamine are the essential precursors of sialic acid, the specific monomer of polysialic acid, a bacterial pathogenic determinant, for example, Escherichia coli K1 uses both amino sugars as carbon sources. It has been reported that ManNAc can be used as a treatment for hereditary inclusion body myopathy, an adult-onset, progressive neuromuscular disorder and also for renal disorders involving proteinuria and hematuria due to podocytopathy and/or segmental splitting of the glomerular basement membrane (Galeano, 2007).</p>

<p>GDP-D-mannose is a natural mannosyl donor and substrate for mannosyltransferases that catalyses mannosylation, for instance during the synthesis of the trimannoside core of complex, high-mannose or hybrid N-glycans. GDP-D-mannose is widely used in (chemo)enzymatic synthesis of oligosaccharides and its biosynthesis occurs from glucose-6-phosphate over several steps. GDP-D-mannose consists of a D-mannose unit, α-glycosydically linked to the nucleotide guanosine diphosphate (GDP). Examples of this important reaction would be the transfer of mannosyl moieties onto the dolichol-P-P-GlcNAc2 precursor of N-glycans in the endoplasmatic reticulum, with release of GDP, or the mannosylation reactions during GPI-anchor (bio)synthesis. GDP-D-mannose has also been used for the in vitro synthesis of b-mannan oligosaccharides.</p>

<p>Curdlan is a microbial polysaccharide produced by a mutant strain of Alcaligenes faecalis var. myxogenes which was first shown to produce succinoglucan prior to mutation. Curdlan is a β-1,3 glucan forming clear solutions at about 55 °C which then gels (“low-set”) when cooled. Suspensions of curdlan at higher temperatures form firm resilient gels (“high set”) that melt at 140 - 160 °C.<br>The image was kindly provided by Dr. Chris Lawson.</p>

<p>Bacterial exopolysaccharide from gram negative Bacillus polymixa</p>

<p>1,4-Anhydro-2,O:5,6-di-O-isopropylidene-2-C-(hydroxymethyl)-D-galactitol is a custom synthesis. It is commonly used in the modification of saccharides and oligosaccharides to produce fluorinated derivatives with various functional groups. The preparation of this compound has been described by Click chemistry.</p>

<p>This mixture contains some of the neutral and sialylated oligosaccharides found in human meconium.</p>

<p>Cellobionic acid is produced by oxidative enzymes working on cellulose.  These compounds have found application in cosmetic antiaging formulations, moisturizers, and peels, and in treatment products to improve hyperpigmentation and acne. The bionic acids such as cellobionic acid offer the benefits of α-hydroxyacids without irritation. They also provide additional antioxidant/chelation, barrier strengthening, and moisturizing effects.</p>

<p>UDP-a-D-galactose disodium salt (UDP-Gal) is a sugar-nucleotide substrate of galactosyltransferases. It’s used as the donor of galactose in the biosyntheses of glycoproteins and glycolipids. Its low cellular content is also hypothetically linked to the defective galactosylation in galactosemia.</p>

<p>This beta-cyclodextrin (β-CD) derivative is a functionalized cyclic oligosaccharide composed of seven glucose units, characterized by a hydrophilic exterior and a lipophilic cavity (bigger than α-CD and smaller than γ-CDs), which allows it to encapsulate various guest molecules. This structural feature facilitates its use in multiple applications, including pharmaceuticals, food enhancement, and cosmetics. In the pharmaceutical industry, it enhances the solubility and stability of poorly water-soluble drugs, improving their bioavailability and efficacy while also masking unpleasant tastes. The food sector utilizes it as a stabilizer for flavors, colors, and nutrients, extending shelf life by protecting sensitive ingredients from degradation. In cosmetics, it serves as a complexing agent for fragrances and active components, ensuring their stability and controlled release. Its use expands to many other fields, including nanotechnology for drug delivery systems, environmental remediation for extracting organic pollutants, textiles for slow-release fragrances, and analytical chemistry for chiral separation.</p>

<p>Isolated from the partial acid and enzymic hydrolysates of several of the mannans,  galactomannans and glucomannans. While the trisaccharide has been isolated from all of these sources the tetrasaccharide has only been isolated from ivory-nut mannan, white spruce (Picea glauca) and Pinus strobus glucomannans. Crystalline penta- and hexa-saccharides have been isolated from ivory-nut mannan hydrolysates.</p>

<p>Trehalose is a naturally occurring disaccharide found in many organisms.Its role in nature is as versatile as its applications in the laboratory. Trehalose is synthesized by cells in response to stress and helps retaining the cellular integrity under tough conditions: An important function of Trehalose is to stabilize protein structures and to prevent proteins from their degradation. Researchers use Trehalosefor instance as a carbon source in selective microbiological media, as desiccation protectant and for cryoprotection.</p>

<p>Please enquire for more information about D-Maltose monohydrate including the price, delivery time and more detailed product information at the technical inquiry form on this page</p>

<p>Please enquire for more information about GDP-L-fucose disodium including the price, delivery time and more detailed product information at the technical inquiry form on this page</p>

<p>2,3:4,5-Di-O-isopropylidene-1,6-di-O-benzyl-D-myo-inositol is a complex carbohydrate and a sugar. It is an oligosaccharide with two monosaccharides and a glycosidic linkage. It has been modified by methylation, fluorination and Click chemistry. This compound has been custom synthesized for high purity.</p>

<p>1-O-Methyl-β-D-glucuronic acid is a β-glucuronidase inducer.</p>

<p>Used in synthetic organic chemistry and natural product synthesis. Induces apoptosis by inhibiting the synthesis and increasing the efflux of glutathione. It is used for synthesis of optically active dipyrrolyl alkanols from pyrroles on the surface of montmorillonite KSF clay.</p>

<p>D-Glucuronolactone is supposed to be involved in detoxification processes.</p>

<p>(2R, 3R, 4R) -3, 4- Difluoro- 1- (phenylmethyl) - 2- pyrrolidinemethanol is a synthetic compound that has been modified to contain fluoro substituents. It is an intermediate for the synthesis of oligosaccharides and complex carbohydrates. This compound can be used in click chemistry or glycosylation reactions. The purity of this compound is greater than 99% and it has not been tested on animals.</p>

<p>Glycol ethers are compounds that are used as solvents and plasticizers. They have been shown to inhibit the activity of enzymes, such as glucose-6-phosphate dehydrogenase, which is involved in the conversion of glucose to phosphate. Glycol ethers also promote sugar transport by inhibiting the sodium-dependent glucose transporter (SGLT). This transport mechanism is important for maintaining normal blood sugar levels and preventing diabetic neuropathy. Glycol ethers are also anti-diabetic agents that can increase insulin sensitivity by stimulating insulin release from pancreatic beta cells and improving the response of peripheral tissues to insulin stimulation.</p>

<p>Please enquire for more information about 2-[(1E)-2-[6-(β-D-Galactopyranosyloxy)-2,3-dihydro-1H-xanthen-4-yl]ethenyl]-3,3-dimethyl-1-propyl-3H-indolium iodide including the price, delivery time and more detailed product information at the technical inquiry form on this page</p>