73818 Results for: "MP Biomedicals"

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Guaiacol is a phenolic natural product first isolated from Guaiac resin, as well as the oxidation of lignin. It is readily oxidized by the heme iron of peroxidases including the peroxidase of cyclooxygenase (COX) enzymes. Guaiacol is able to inhibit prostaglandin biosynthesis like a classic NSAID, but it does not induce gastric damage.

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Alamethicin is a monovalent cation ionophore that can mimic nerve action potential across artificial membranes. It increases the incorporation of 32P into phosphatidylinositol 4-phosphate and sarcoplasmic reticulum vesicles permeability and causes fusion of lipid vesicles.

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Phosphatidylethanol is used as a chromatographic standard to assay PLD activity in intact cells via the conversion of phosphatidylcholine to phosphatidylethanol by phospholipase D in the presence of ethanol.

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Soluble in ethanol and water.

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p-Nitrophenethyl alcohol is used as a protecting reagent for phosphates and O6 of deoxyguanosine.

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Nitrofurantoin is an antibactericidal compound that has been historically prepared by the reaction of 1-aminohydantoin sulphate and 5-nitro-2-furaldehyde diacetate.

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Use of dextrans as long and hydrophilic spacer arms improves the performance of immobilized proteins acting on macromolecules. Dextrans are used in many applications as platelet aggregants, plasma volume extenders, osmotic pressure regulators, stabilizers, organ separation media, matrix components, copolymers, microcarriers, binding agents, viscosity modifiers, antithrombotics, lubricants and physical structure components. They may be used as long hydrophilic spacer arms to improve the performance (freedom of movement) of conjugated/bound proteins. Dextrans may be derivatized for use in biosensor systems.

Dextran is branched polysaccharide made up of linear α (1→6) linked glucose units and α (1→3) link initiated branches; it ranges in size from 10,000 to 150,000 Kd.Depending upon its molecular weight it has different uses in different fields.

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Liqui-Gel is a 40% (w/v) solution of ultra pure acrylamide and bis-acrylamide in deionised water. The gel is formed by the polymerisation of the acrylamide monomer with a co-monomer often N,N'-Methylene-bis-acrylamide, which acts as a cross-linking agent, in the presence of free radicals or a photochemical initiator.

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Phenol : chloroform saturated solution pH 5.2

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Soluble in water (50 mg/ml).

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Saponin is "built" from quillaic acid, a sugar and possibly other substances. It is a Glycoside widely distributed in plants.

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Adonitol (ribitol), a pentose alcohol, is metabolised to teicholic acids used in the cell walls of gram positive bacteria. Adonitol is often compared to other cell permeating molecules such as formamide, propanediol, and DMSO as a cryopreservation agent.

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Soy flour or soy grits refers to defatted soybeans ground finely.

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Storage: Room Temperature
Guanidine hydrochloride consists of a network of guanidinium cations and chloride anions linked by N–H•••Cl hydrogen bonds, it is a strong chaotropic agent. Guanidine HCl may agglomerate upon storage. It may appear as a free-flowing crystalline powder, a free flowing powder with solid material dispersed throughout, or a solid. The quality of the product does not appear to be affected and solutions prepared from the free-flowing and lumpy guanidine HCl appear identical.
Guanidine hydrochloride can be used as the first step in refolding proteins or enzymes into their active form. Urea and dithiothreitol (DTT) may also be necessary. Also used in the isolation of RNA. Guanidine hydrochloride is a strong chaotropic agent useful for the denaturation and subsequent refolding of protein, it can solubilize insoluble or denatured proteins such as inclusion bodies and be used for the recovery of periplasmic proteins.

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Palmitic acid, or hexadecanoic acid is one of the most common 16 carbon saturated fatty acids found in animals and plants

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Inhibitors: p-Chloromercuribenzoate, lodoacetamide, heavy metal ions (Zn²⁺, Fe²⁺, Zn²⁺, Cd²⁺, Cu²⁺, Pb²⁺, Ag⁺, Hg²⁺), Ionic Detergents (SDS, DAC, etc.). Contaminants: The preparation is practically free from other glycosidases (a-galactosidase, a-,b-glucosidase, a-,b-mannosidase, etc.) and proteinase. Principle: o-Nitrophenyl-b-D-galactopyranoside (ONPG) b-galactosidase > o-Nitrophenol (ONP) +D-Galactose. The appearance of o-nitrophenol is measured at 410 nm by spectrophotemetry. Thermal stability: below 50 °C (pH 7,3; 15 min) (Lit.), Optimum Temperature: 50 to 55 °C (Lit.).

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Casein from bovine milk is a phosphoprotein. It make up approximately 80% of the total protein in bovine milk. It is proposed to be the main protective constituent in milk.

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Kinetin is an adenine-type cytokinin phytohormone.

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Sulfanilamide is used used as Antibacterial agent. It is also used to treat Vaginal infection caused by fungus.

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Soluble in acetic acid 80% (50 mg/ml - clear colourless solution)

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Soluble in chloroform (100 mg/ml) and ethanol.

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Brewers yeast is often used as a source of B-complex vitamins, chromium, and selenium. It is also can be used to bake bread, ferment wine, beer and ethanol production.

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5-Iodo-2'-deoxyuridine (Idoxuridine) ≥99%, crystalline

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Substances reducing by Fehlings solution as maltose: 0,059%.

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Adenosine 5′-diphosphate (ADP) is an adenine nucleotide involved in energy storage and nucleic acid metabolism via its conversion into ATP by ATP synthases. ADP affects platelet activation through its interaction with ADP receptors P2Y1, P2Y12 and P2X1. Upon its conversion to adenosine by ecto-ADPases, platelet activation is inhibited via adenosine receptors.

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Soluble in water (5%). Sparingly soluble in alcohol; insoluble in ether.

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One unit decomposes 1,0 µmole of hydrogen peroxide per minute at pH 7,0, 25 °C.

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Butyric acid is used in the preparation of various butyrate esters. Low-molecular-weight esters of butyric acid, such as methyl butyrate, have mostly pleasant aromas or tastes. As a consequence, they find use as food and perfume additives. It is also used as an animal feed supplement, due to the ability to reduce pathogenic bacterial colonization.

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Trypsin consists of a single chain polypeptide of 223 amino acid residues. It is a member of the serine protease family. It composed of two subunits, α-trypsin and β-trypsin. α-Trypsin is composed of two peptide chains and β-trypsin is composed of one chain.

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YNB media, a component of synthetic defined yeast media is a well defined composition of salts, vitamins and nitrogen source for a vigorous growth of S. cerevisiae.