Aprotinin is a protein consisting of 58 amino acids, arranged in a single polypeptide chain that is crosslinked by three disulfide bridges. Aprotinin is found in bovine lymph nodes, lung, parotid gland, spleen, liver, pancreas, seminal vesicles, thyroid gland, kidney, mucous membranes of the…

Casein hydrolysate enzymatic is a pancreatic hydrolysate of casein. This hydrolysate contains, in the form of mixed amino acids and peptides, all amino acids originally present in casein. It is a refined product providing high quality soluble source of amino acids, polypeptides and peptides. …

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…

Gum Arabic can be branched polymer of galactose, rhamnose, arabinose, and glucuronic acid as the calcium, magnesium, and potassium salts. It is used in textiles, ceramics, lithography, cosmetics and pharmaceuticals. In the food industry, acacia is mainly used as confectionery, bakery, dairy,…

Used to suppress immune response in vivo and in vitro.

* 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…

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…

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…

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…

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…

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…

Bromelain is a cysteine endopeptidase with broad specificity for cleavage of proteins. Bromelain may be from a stem or piece of fruit. Glycoprotein which is a highly active thiol proteinase Non-specific cysteine protease Splits glycine esters but not lysine esters Protein digesting…

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…

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…

The total protein is determined using the Biuret procedure, with bovine albumin as the standard. The product is tested for purity at a minimum of 20 mg/mL using immunoelectrophoresis. The IgG concentration is determined by radial immunodiffusion and is reported in mg/mL, and percentage of total…

Cholesterol oxidase (CHOD) catalyzes the first step in cholesterol catabolism. Cholesterol oxidase from Streptomyces has been used in a study to assess the relationship between the micellar structure of model bile and the activity of esterase. Cholesterol oxidase from Streptomyces has also been…

C1q, together with C1r and C1s, in the ratio of 1:2:2, form the C1 complex which is the first component of the classical complement pathway. C1q is composed of 18 polypeptide chains (six A, six B, six C) (MW 460 kDa). All contain an 81-aa collagen-like region composed of (Gly-Xaa-Yaa) repeating…

Lactulose is used as a test of small intestine bacterial overgrowth (SIBO). Lactulose is used in the treatment of chronic constipation. It is useful in treating the hyperammonemia caused by hepatic encephalopathy, because it helps "draw out" ammonia from the body. Lactulose is also a food…

Angiotensin II is a peptide hormone which plays an important role in the regulation of blood pressure. It stimulates the release of aldosterone from the adrenal gland. It has strong vasoconstrictive effects. Angiotensin II plays an important role in the regulation of blood pressure. It…

All blood products should be treated as potentially infectious. 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 monkey IgG is obtained upon reconstitution. Monkey…

Hemoglobin is used to study paradigm for the regulation of gene expression and cellular differentiation. Hemoglobin is the major component of red blood cells, and is responsible for their red color. A major oxygen-transporting component of red blood cells, it's normal concentration in…

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 50 mg of rabbit IgG is obtained upon reconstitution. Rabbit IgG is purified from pooled rabbit serum using multi-step…

Pokeweed mitogen is extracted from pokeweed roots. This protein has hemagglutinating, leukoagglutinating, and mitogenic properties. PWM is not blood group specific, but has affinity for N-acetyl-β-D-glucosamine oligomers. Reconstitution: Reconstitute with 0.01M sodium phosphate-0.15M sodium…

Ficoll® is a synthetic, hydrophilic polymer made by the copolymerization of sucrose and epichlorhydrin. It is a highly branched polymer. Solutions at neutral pH can be sterilized by autoclaving. Ficoll® has the follwing key advantages: Proven medium for density gradient centrifugation.…

Protein S is a single chain vitamin K-dependent glycoprotein containing glycine and NaCl which is thought to function in both coagulation and complement cascades. It is produced in the liver and has been identified in plasma at a concentration of approximately 22 µg/mL. Homozygous deficiency…

Intrinsic factor is a glucoprotein extracted from the pylorus part of the gastric mucous membrane. Its presence is considered necessary for the absorption of Vitamin B-12. Intrinsic Factor is used in the treatment not only of classical pernicious anaemia, but also in the treatment of other…

Avidin is a basic glycoprotein consisting of four essentially identical subunits. The combined molecular weight of the subunits is about 66,000. Each subunit is a single polypeptide chain containing 128 amino acid residues with alanine at the N-terminal, glutamic acid at the C-terminal, and a…

Aprotinin is a natural inhibitor of trypsin, chymotrypsin and plasmin. It is found in bovine lymph nodes, lung, parotid gland, spleen, liver, pancreas, seminal vesicles, thyroid gland, kidney, mucous membranes of the trachea and esophagus, ovaries, heart, posterior pituitary and cartilage. A serine…

Bovine γ-globulin is a plasma protein fraction rich in antibodies. Bovine γ-globulin has been used as an immunological challenge in studies of mechanisms of immunotolerance. Bovine γ-globulins were used to study the constituents and pH changes in protein rich hyaluronan…

Fibronectins are adhesive glycoproteins and are found both as cell surface proteins and in plasma. Human fibronectin (HFN) is suitable for use as an attachment factor in the propagation of cells in vitro when used to coat cell culture surfaces, including plasticware, glassware, and…

Arginine-rich subgroup. Commonly used for chromosome-reconstitution studies. Suitable substrate for protein kinase C.

This casein hydrolysate is an hydrochloric acid digest of casein in which the protein molecule has been substantially reduced to its constituent amino acids. Laboratory media including basal media for vitamin analysis of folic acid, pantothenic acid, riboflavin, thiamin, niacin, and B-12.