Trypsin is a porcine pancreas-derived enzyme that is commonly used for the dissociation and disaggregation of anchorage-dependent mammalian cells and tissues. The concentration of trypsin necessary to dislodge cells from their substrate is dependent primarily on the cell type and the age of the…

Used to suppress immune response in vivo and in vitro.

Streptavidin is a protein produced by the bacterium Streptomyces avidinii. It has four binding sites for biotin, as does avidin. Both have been used extensively as probes in immunochemical systems, conjugated to antibodies, enzymes or fluorochromes. However, avidin is highly basic (pI ~ 10.5),…

Pancreatin is a digestive enzyme produced by the pancreas and delivered to the small intestine for the hydrolysis of complex nutrients. Pancreatin contains enzymatic components including trypsin, amylase and lipase, ribonuclease, and protease, produced by the exocrine cells of the porcine pancreas.…

Tubulin, Purified from Bovine Brain, 1 mg. Purified bovine brain tubulin protein supplied in liquid form at 10 mg/mL in 80 mM PIPES buffer containing 1 mM EGTA, 1 mM GTP, pH 6.8 and 10% glycerol. It is a heterodimer composed of a- and ß- tubulin of 55 kDa (molecular weight ?110 kDa). Polymerization…

Fibronectin are adhesive glycoproteins and are found both as cell surface proteins and in plasma. They are large glycoproteins found in cells and extracellular fluids. They are involved in a wide range of biological activities including cell adhesion to extracellular matrices, blood coagulation and…

Chitosan is a cationic marine polymer derived form the shells of crustaceans (e.g., crabs). MP's chitosan is a partially de-acetylated chitin formed by the reaction of chitin with concentrated alkali. Chitin is a high molecular weight linear polymer of anhydro-N-acetyl-glucosamine. Chitin…

Biological activity: The material is tested for biological activity by conducting mutagenesis titration curves with at least one of the following three tests: benzo(a)pryrene, 2-anthramine, and 2-acetylaminofluorene. Preparation: The material is prepared from 8-10 week old Sprague Dawley male…

Suitable for cell adhesion in tissue culture, as well as gel formation, platelet aggregation, and as a substrate for collagenase. Collagen is a group of naturally occurring proteins found in animals, especially in the flesh and connective tissues of vertebrates. It is the main component of…

Product reacts in an agglutination assay with anti-sheep red blood cells. The hematocrit is within the acceptable range. Red blood cells collected into Alsever's solution (Dextrose, sodium chloride, sodium citrate), washed with phosphate buffered saline and preserved with borate buffer,…

β-Galactosidase cleaves terminal galactose residues, which are β -1-->14 linked to a monosaccharide, glycopeptide, or oligosaccharide. The enzyme requires Mg2+ for optimal activity. β-Galactosidase is useful for the structural investigation of carbohydrate, the determination of…

Apoferritin is the Protein shell of ferritin. Calibration of gel filtration columns and sodium dodecyl sulfate (SDS)-polyacrylamide gel electrophoresis Acts as an anti-oxidant When added to cultured endothelial cells apoferritin is taken up in a dose-responsive manner and appears to…

Collagen Solutions are highly purified (predominantly Type I) solutions especially prepared for Tissue Culture applications. Collagen Solutions may be used to prepare a collagen coating on plastic or glass culture dishes, or to prepare actual collagen gels for culture work. Since collagen plays an…

The total protein is determined using the Biuret procedure, with bovine albumin as the standard. Each vial is overfilled by approximately 10 percent so that a minimum of 20 mg of rat IgG is obtained upon reconstitution. Rat IgG is purified from pooled rat serum using multi-step procedures…

Tubulin, porcine, 99% pure, 1 mg. Tubulin is composed of a heterodimer of two closely related 55 kDa proteins called alpha and beta tubulin.

Bovine Transferrin is chromatographically purified from New Zealand-sourced bovine plasma in an ISO quality system assuring complete traceability and consistent high quality. Transferrin (HOLO) is an iron-rich product supplied as a heat-treated, lyophilized powder.

Casein is the name for a family of related phosphoproteins (αS1, αS2, β, κ). These proteins are commonly found in mammalian milk, making up 80% of the proteins in cow milk and between 20% and 45% of the proteins in human milk. Casein has a wide variety of uses, from being a…

Fibrinogen is a blood protein that is involved in clotting and is converted to fibrin by thrombin. Fibrinogen has an approximate molecular weight of 340 kDa. It consists of three non-identical pairs of disulfidebonded chains. The α-chain has an approximate molecular weight of 63.5 kDa, the…

Crude Phaseolus vulgaris-P lectin (PHA-P) from the Red Kidney Bean. Phytohemagglutinin PHA agglutinates the erythrocytes of all human blood groups as well as those of rabbit, dog, cat, mouse, sheep, and guinea pig. The optimal amount of PHA required for the agglutination of erythrocytes varies with…

Casein, Acid Hydrolysate is a hydrochloric acid hydrolysate of casein for use in preparing microbiological culture media. Prepared by acid digestion of casein Nutrient fo laboratory media and fermentation Used in vaccine and toxin production Casein is a rich source of amino…

This product is useful for structural and biological studies, as a reference standard, or as starting material for immunogen preparation. It is prepared using salt fractionation and/or chromatographic techniques. Purity: >98%

Anti-globulin reagent (Coombs' serum) is prepared by immunizing rabbits with canine IgG, IgM and C3 purified from normal serum. The resulting whole antiserum is heat treated to inactivate complement and is adsorbed with normal pooled canine erythrocytes to remove nonspecific agglutinins. Canine…

Casein hydrolysate is a hydrochloric acid digest of casein in which the protein molecule has been substantially reduced to its constituent amino acids. The protein hydrolysate has been specially processed to remove essentially all sodium chloride. Laboratory media including basal media for…

Beef extract is a water soluble powder that is used in general purpose media. It is recommended for use in bacteriological examination of water, milk, and other materials, where uniform composition of media is important and for biochemical studies, particularly fermentation reactions because of its…

* Used to lyse living yeast cell walls to produce protoplast or spheroplast * Can be used for glucan hydrolysis Zymolyase-20T is an enzyme preparation from a submerged culture of Arthrobacter luteus which effectively lyses cell walls of viable yeast cells. This preparation is a…

Protamine sulfate is a purified mixture of simple protein principles obtained from the sperm or testes of suitable species of fish, which has the property of neutralizing heparin. Because of having much basic amino acids (mostly arginine) protamine contains far greater nitrogen than other proteins.…

Protein A is a highly stable surface receptor which is capable of binding the Fc portion of immunoglobulins, especially IgGs, from a large number of species. Each protein A molecule can bind 2 molecules of IgG, allowing the formation of a precipitate. Protein A may be coupled to a wide variety…

β-2-microglobulin (β2-M) is a polypeptide that associates with the heavy chain of class I major histocompatibility complex (MHC) antigens on the cell surface. The interaction is dynamic and plays a critical role in the stability of the MHC antigens and their ability to present peptide…

Fetuin is a protein containing 12 Cys residues, all involved in disulfide bridges. The composition of bovine fetuin (weight %) is polypeptide 74%, hexose 8.3%, hexosamines 5.5%, and sialic acid 8.7%. Fetuin bovine is a protein with the ability to bind to the insulin receptor and inhibit insulin…

Hemoglobin is the major component of red blood cells, and is responsible for their red color. Native hemoglobin from bovine erythrocytes. A major oxygen-transporting component of red blood cells Its normal concentration in erythrocytes is 34%. Hemoglobin is the most important respiratory protein of…

Yeast Hydrolysate Enzymatic is an autolyzed yeast extract produced from 100% brewers yeast. It is a concentrated source of soluble protein components, carbohydrates, and B Complex vitamins natural to yeast.

Peptone a water-soluble product, is a mixture of polypeptides and amino acids formed by the partial hydrolysis of protein. Peptone is produced from porcine and/or bovine tissues. The tissues are digested enzymatically to create small peptides and then spray dried. Peptone is used in culture…