2261 Results for: "Electrophoresis"

Supplier: Promega Corporation

GoTaq Hot Start Master Mixes are all-in-one master mixes (just add template and primers) that contain the high-performance GoTaq DNA Polymerase bound to a proprietary antibody that blocks polymerase activity until the reaction is heated at 94-95°C for two

Supplier: Thermo Fisher Scientific

The Barnstead LabTower EDI water purification systems provides up to 200L/day of Type 1, ultrapure (18.2 megohm) water or Type 2 (10-15 megohm) water from tap water

Supplier: AVIDITY SCIENCE

Provides type 1- ultrapure water on demand for applications like cellular analysis, HPLC and mAbs.

Supplier: MP Biomedicals

Storage: Room Temperature
Polysorbate 20 is nonionic surfactants derived from sorbitan ester, it is soluble or dispersible in water but differ widely in organic and oil solubility.
Polysorbate 20 is typically used as an emulsifying agent for the preparation of stable oil-in-water emulsions, particularly in pharmaceutical applications. It is also used in pre-extraction of membranes to remove peripheral proteins & as a blocking agent on nitrocellulose at a typical concentration of 0.05%.
Series of nonionic surfactants derived from sorbitan esters. They are soluble or dispersible in water but differ widely in organic and oil solubilities. Used as oil-in-water emulsifiers in pharmaceuticals, cosmetics, cleaning compounds, etc.

Supplier: Promega Corporation

New formulation of Taq DNA Polymerase with enhanced performance over standard Taq DNA Polymerase. Available in two all-in-one master mixes: green and colorless. The green master mix allows direct gel analysis after amplification.

Supplier: MP Biomedicals

CellMaxx™ Bovine Albumin is chromatographically purified from New Zealand-sourced bovine plasma in an ISO quality system assuring complete traceability and consistent high quality. This albumin has very low endotoxin and low IgG to simplify downstream purification, is tested for the absence of viruses according to 9CFR and has the highest possible biosafety level. The albumin supports growth of stem cells and increases protein production from hybridoma cells.

Supplier: Microgenics Corporation (Mas)

Consolidate general chemistry and serum protein QC processing into a single product offering three distinct levels with MAS™ Omni-CORE™ Controls

Supplier: Thermo Scientific Chemicals

Substrate for alkaline and acid phosphatase determinations.

Supplier: Genetex

Alpha Actinin is an actin binding protein present in both muscle and non-muscle cells. It has a molecular weight of 100,000 daltons and forms dimers in solution. In normal skeletal muscle alpha actinin is associated with the z-discs that define muscle sarcomeres. In smooth muscle alpha actinin has been detected in dense bodies and plaques characteristic of the tissue. Immunofluorescent labeling of a large variety of cells using antibody to alpha actinin reveals extensive association of the proteins with actin containing stress fibers and in particular with their membrane bound termini.

Supplier: Promega Corporation

GoTaq Hot Start Master Mixes are all-in-one master mixes (just add template and primers) that contain the high-performance GoTaq DNA Polymerase bound to a proprietary antibody that blocks polymerase activity until the reaction is heated at 94-95°C for two

Supplier: Thermo Fisher Scientific

Suitable for even the most demanding and sensitive applications, the family of Thermo Scientific™ Barnstead™ GenPure™ water purification systems deliver ultrapure 18,2 MΩ.cm water with consistent quality.

Supplier: Promega Corporation

New formulation of Taq DNA Polymerase with enhanced performance over standard Taq DNA Polymerase. Available in two all-in-one master mixes: green and colorless. The green master mix allows direct gel analysis after amplification.

Supplier: MP Biomedicals

Deoxycholic Acid Sodium Salt Monohydrate is an anionic biological detergent for the solubilization of membrane-bound proteins.

Supplier: WORLD PRECISION INSTRUMENTS LLC

The NanoFil™ Gas-Tight Injection System boasts zero dead volume. Variability is eliminated with the NanoFil™  design: our interchangeable needles advance directly into the syringe barrel, creating a 1:1 connection with the plunger-a truly gas-tight system built for low-volume sample control.

Supplier: Invitrogen

Thermo Scientific Surfact-Amps Detergent Sampler is a convenient collection of various Thermo Scientific Surfact-Amps Detergent Solutions and selected other useful detergents for protein research methods.

Supplier: Invitrogen

Thermo Scientific Pierce Coomassie Brilliant Blue G-250 is one of the most common forms of coomassie dye, which is a key component of various colorimetric protein gel stains.

Supplier: Biotium

Kits for reversible protein visualization and quantitation on protein gels and western blot membranes by labeling with near-infrared CF® dyes.

Supplier: Analytik Jena US

The EL Series UV Lamps from Analytik Jena provide models with longwave, shortwave, midrange UV and/or white light in four, six or eight watts intensities. Some models feature multiple UV wavelengths in the same lamp.

Supplier: Genetex

Pigment epithelium derived factor, originally identified in conditioned medium of cultured human fetal retinal pigment epithelial (RPE) cells, is a neurotrophic protein that induces extensive neuronal differentiation in human Y79 retinoblastoma cells, a neoplastic counterpart of normal retinoblasts. It has been suggested that PEDF is synthesized by RPE cells and secreted into the retina interphotoreceptor matrix where it may influence development/differentiation of the neural retina. PEDF is a potent inhibitor of angiogenesis. As it does not undergo the S (stressed) to R (relaxed) conformational transition characteristic of active serpins, it exhibits no serine protease inhibitory activity. The PEDF gene is a member of the serpin gene family. Serpins are a group of serine protease inhibitors, some of which have also been reported to exhibit neurotrophic activity.

Supplier: Cytiva

RAPD reactions are pre-optimized for use with a wide variety of organisms.

Supplier: MP Biomedicals

Bovine albumin is a single polypeptide chain consisting of approximately 583 to 595 amino acid residues and no carbohydrates. At pH 5-7 it contains 17 intrachain disulfide bridges and 1 sulfhydryl group.

Supplier: Cytiva

CyDye™ DIGE fluors are available as minimal and saturation labeling dyes. The minimal dyes are intended for general 2-D application use where sufficient amounts of sample are available. The saturation dyes from the Scarce Sample Labeling Kit are designed to be used for applications where only small amounts of sample are available, for example in Laser Capture Microdissection.

Supplier: MP Biomedicals

Sodium chloride is a commonly used chemical which is found widely in nature. It is considered to be an essential nutrient. Excess amounts of sodium chloride can destroy electrolyte balance and cause death in most animals, including humans.
Sodium chloride is used in a wide variety of biochemical applications, including intravenous fluids (normal saline is 0.9% w/v in water 10), density gradients 3,6, a diluent to increase ionic strength in buffers or culture media and in salt-out procedures in the isolation of DNA. It has also been used in high concentrations for preservation of foods since bacteria cannot grow in high salt conditions. A salt-ice mixture in the ratio of approximately 33 g sodium chloride to 100 g ice (at -1°C) will drop in temperature to as low as -21°C, depending on the rate of stirring and the size of the ice chunks.

Supplier: MP Biomedicals

Cholic acid is a biochemical solubilizing agent (a non-ionic, non-denaturing detergent). Occurs inconjugation with glycine or taurine in bile of most vertebrates.

Supplier: Bio-Rad

CHEF genomic DNA plug kits provide a convenient means for preparing intact, chromosome-sized DNA for PFGE

Supplier: Lucigen

Dependable, consistent high-fidelity PCR results with every target DNA template, every time

Supplier: MP Biomedicals

Deoxyribonuclease from beef pancreas, DNase I, was first crystallized by Kunitz. It is an endonuclease which splits phosphodiester linkages, preferentially adjacent to a pyrimidine nucleotide yielding 5'-phosphate terminated polynucleotides with a free hydroxyl group on position 3'. The average chain of limit digest is a tetranucleotide. DNase I acts upon single chain DNA, and upon double-stranded DNA and chromatin. In the latter case, although histones restrict susceptibility to nuclease action, over a period of time nearly all chromatin DNA is acted upon. According to Mirsky and Silverman, this could result from the looseness of histone attachment to DNA. They found that lysine-rich histones more effectively block DNase access to DNA than arginine-rich histones. Billing and Bonner suggest that DNase attacks the histone-free strand of chromatin DNA. Schmidt, et. al.indicate that hydrolysis of the histone-free region of DNA strands accounts for the initial rapid action of the enzyme on chromatin. Bollum reports degradation of synthetic homopolymer complexes by DNase I. The intracellular functions of the enzyme are probably controlled by a DNase inhibitor, which according to Lazarides and Lindberg is actin.

Supplier: MP Biomedicals

Guanidine Hydrochloride is a protein denaturant and thus having an important role in molecular weight determinations.
Guanidine Hydrochloride is a strong chaotropic agent useful for the denaturation and subsequent refolding of proteins. This strong denaturant can solubilize insoluble or denatured proteins such as inclusion bodies. This can be used as the first step in refolding proteins or enzymes into their active form. Urea and dithiothreitol (DTT) may also be necessary. Guanidine HCl is used in the isolation of RNA to dissociate the nucleoprotein into its nucleic acid and protein moieties. It is an inhibitor of RNase. Highly concentrated (6 - 8 M) Guanidine HCl solutions are used to denature native globular proteins. It apparently disrupts hydrogen bonds which hold the protein in its unique structure. However, there also is evidence suggesting that guanidine hydrocholoride may disrupt hydrophobic interactions by promoting the solubility of hydrophobic residues in aqueous solutions.

Supplier: MP Biomedicals

Tweens® are a series of nonionic surfactants derived from sorbitan esters. They are soluble or dispersible in water but differ widely in organic and oil solubilities. Used as oil-in-water emulsifiers in pharmaceuticals, cosmetics, cleaning compounds, etc.
Tween® 80 has been widely used in biochemical applications including: solubilizing proteins, isolating nuclei from cells in culture selective protein extraction growing of tubercule bacilli, and emulsifying and dispersing substances in medicinal and food products. It has little or no activity as an anti-bacterial agent. It has been shown to have an adverse effect on the antibacterial effect of methyl paraben and related compounds. Non-ionic detergent used for selective protein extraction and isolation of nuclei from mammalian cell lines.
Soluble/miscible in water to give a clear yellow solution; miscible with alcohol, dioxane, and ethyl acetate; practically insoluble in liquid paraffin and fixed oils (such as mineral oil).
Autoclaving of solutions is not recommended. Sterile filtering is suggested with a 0.22 micron filter. Tween® may need to be warmed to about 40 °C and alternated with portions of hot distilled water while being poured through the filter.
Store at Room Temperature (15-30 °C).

Supplier: List Biological Laboratories, Inc.

The potent toxicity of both the botulinum neurotoxins and anthrax lethal toxin is due to a zinc-dependent proteolytic activity associated with the toxins.  Measurement of this enzymatic activity provides for both a potentially sensitive and direct means for detection of the toxin, and a method for identifying potential toxin inhibitors using high throughput screening. A highly efficient approach for monitoring enzymatic activity is based on the use of fluorescence resonance energy transfer (FRET) substrates. These fluorogenic peptides contain a donor fluorescent group at one end and a suitable chromogenic acceptor group at the other.  The fluorescence is quenched initially by intramolecular energy transfer between the donor/acceptor pair.  Cleavage of the FRET substrate by the appropriate enzyme releases the fluorophore and full fluorescence is restored.  The increase in fluorescence intensity is directly proportional to the amount of enzyme present.  Enzymatic activity can be monitored continuously by recording the increase in fluorescence intensity with time.  The change in the relative fluorescence units (RFU) as cleavage occurs can be converted to nmoles of cleaved substrate from a standard curve generated using a Calibration Peptide which is the cleaved substrate containing only the N-terminally attached fluorophore.  For Botulinum neurotoxin type A, a Control FRET peptide substrate that is not cleaved by the neurotoxin but contains all remaining non-specific sites in the sequence can be used to screen background cleavage of the substrate that can occur in complex matrices.