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647 results for Enzimi

 

Enzimi

Enzymes accelerate, or catalyse, chemical reactions, and they are known to catalyse more than 5,000 biochemical reaction types. Most enzymes are proteins, although a few are catalytic RNA molecules. Choose specific enzymes for cleaving bonds, removing genomic DNA from RNA preparations, for producing fragments of proteins, or for use in ion exchange chromatography. Enzymes are used in the chemical industry and other industrial applications when extremely specific catalysts are required.

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Thrombin

Thrombin

Supplier: Cytiva

Thrombin is a protease used to digest fusion proteins prepared from pGEX vectors containing the recognition sequence for thrombin (pGEX-1lT, pGEX-2T, pGEX-2TK, pGEX-4T-1, pGEX-4T-2, and pGEX-4T-3).

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alpha-Amylase, MP Biomedicals

Supplier: MP Biomedicals

One bacterial amylase unit is defined as that quantity of enzyme which will dextrinise one milligram of starch per minute at pH 6,6 and 30 °C.

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Cellulase (from Aspergillus niger), MP Biomedicals

Supplier: MP Biomedicals

Cellulase refers to a group of enzymes which, acting together, hydrolyse cellulose. The b-glucosidases, including cellobiose, are primarily active on the smaller molecular weight cellulose hydrolysates. During cellulose breakdown they are active on the dimers and oligomers of cellulose.

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Neuraminidase, MP Biomedicals

Supplier: MP Biomedicals

Neuraminidase (Sialidase: Acylneuraminyl hydrolase; EC 3.2.1.18) From Arthrobacter ureafaciens lyophilised powder with salts. The salts are composed of sodium-potassium phosphate to give a solution of 10 mM phosphate buffer (pH 7) when enzyme is reconstituted with water to make activity of 1 unit per ml. Activity: >60 units/mg protein for NAN-lactose >25 units/mg protein for bovine submaxillary mucin >20 units/mg protein for colominic acid Protein is determined by the method of Lowry et al. with bovine albumin as a standard.6 Unit definition: One unit will liberate 1,0 µmole of N-acetyl-neuraminic acid (NANA) per minute at pH 5,0 at 37 °C, using either one NAN-lactose, bovine submaxillary mucin, or colominic acid as a substrate.

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Human catalase (from Erythrocytes), MP Biomedicals

Supplier: MP Biomedicals

Catalase activates the decomposition of hydrogen peroxide, a reactive oxygen species, into water and oxygen.

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Catalase, MP Biomedicals

Supplier: MP Biomedicals

Dissolves readily at 5 mg/ml in 0,05 M sodium/potassium phosphate pH 7,0 giving a clear green solution.

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Crotalus adamanteus Phosphodiesterase I, MP Biomedicals

Supplier: MP Biomedicals

Lyophilised in vials containing approximately 5 mg dry wt. and at least 100 units/vial (20 to 40 units/mg dry wt.).

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Recombinant Alkaline Phosphatase (from E. coli)

Supplier: Abnova

Recombinant Alkaline Phosphatase (from E. coli)

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Pepsin

Supplier: Spectrum Chemical

Commonly used in biochemistry.

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Macerozyme, MP Biomedicals

Supplier: MP Biomedicals

The amount of macerating activity on potato tuber disks as determined by weight loss at 40 °C, pH 5,0.

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Bovine carbonic anhydrase (from Erythrocytes), MP Biomedicals

Supplier: MP Biomedicals

Soluble in distilled water or dilute buffer.

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Collagenase, MP Biomedicals

Supplier: MP Biomedicals

Collagenase can be solubilised in calcium-free solutions such as Hank's Balanced Salts or Earles Balanced Salt Solution.

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Collagenase, MP Biomedicals

Supplier: MP Biomedicals

For typical assay, dissolve enzyme at a concentration of 1 mg/ml in 0,05 M TES with 0,36 mM calcium chloride, pH 7,5. Dilutions run are 1/10 and 1/20 in the above buffer.

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Bacillus cereus beta-Lactamase, MP Biomedicals

Supplier: MP Biomedicals

Activity: Each vial contains 500 units β-Lactamase I and 50 units β-Lactamase II Unit Definition: One unit is defined as the amount of enzyme which will hydrolyse 1,0 micromole of benzyl penicillin and 1,0 micromole of cephalosporin C per minute at 25 °C in the presence of EDTA pH 7,0.

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Pyruvate kinase, MP Biomedicals

Supplier: MP Biomedicals

Dissolves readily at 5 mg/ml in 0,06 M Tris/HCI pH 7,4 to give a clear colorless solution.

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Pig trypsin (from pancreas), MP Biomedicals

Pig trypsin (from pancreas), MP Biomedicals

Supplier: MP Biomedicals

Trypsin-EDTA solution is widely used for cell dissociation, routine cell culture passaging, and primary tissue dissociation due to its digestive strength.

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Streptococcus (Lancefield group C strain) streptokinase, MP Biomedicals

Supplier: MP Biomedicals

Streptokinase catalyzes hydrolysis of amide linkages. Forms a 1:1 complex with plasminogen which is then converted to streptokinase-plasmin. Both streptokinase-plasminogen and streptokinase-plasmin complexes can activate plasminogen. As a result of its interaction with human or rabbit plasminogen, streptokinase undergoes specific fragmentation.

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Benzonase®

Supplier: MERCK PRODUCTION CHEMICALS

Benzonase® is a highly active nuclease that degrades DNA and RNA to short oligonucleotides. It is used for the elimination of interfering DNA/RNA, for example at protein isolation, or before electrophoresis or chromatography.

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Papain

Supplier: MERCK PRODUCTION CHEMICALS

Papain

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Chicken lysozyme (from egg white), MP Biomedicals

Supplier: MP Biomedicals

Lysozyme (muramidase) hydrolyses preferentially the β-1,4 glucosidic linkages between N-acetylmuramic acid and N-acetylglucosamine which occur in the mucopeptide cell wall structure of certain microorganisms, such as Micrococcus lysodeikticus.

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Pancreatin, MP Biomedicals

Supplier: MP Biomedicals

Pancreatin are natural chemicals that help break down fats, proteins, and carbohydrates. Pancreatin is a digestive enzyme produced by the pancreas and delivered to the small intestine for the hydrolysis of complex nutrients.

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Papain, MP Biomedicals

Supplier: MP Biomedicals

Activators: Papain is activated by cysteine, sulphide, sulphite and more. It is enhanced when heavy metal binding agents such as EDTA are also present. N-bromosuccinimide enhances the activity. Inhibitors: Substances which react with sulphydryl groups including heavy metals, carbonyl reagents. Aldehydes are papain inhibitors. Benzoylamidoacetonitrile is an inhibitor. See Shapira and Arnon (1967a and b) on antibody inhibitors. Papain may be inactivated by H₂O₂ generated by γ-irradiation of H₂O the active SH group being oxidised to sulphenic acid. Specific inhibitors are AEBSF, antipain, cystatin, E-64, leupeptin, PMSF, TLCK and TPCK.

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Catalase, MP Biomedicals

Supplier: MP Biomedicals

Dissolves readily at 5 mg/ml in 0,05 M sodium/potassium phosphate pH 7,0 giving a clear green solution.

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Calf alkaline phosphatase (from intestine), MP Biomedicals

Supplier: MP Biomedicals

Alkaline phosphatase is a hydrolase enzyme responsible for removing phosphate groups from many types of molecules, including nucleotides, proteins, and alkaloids.

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Yeast aldehyde dehydrogenase, MP Biomedicals

Supplier: MP Biomedicals

Yeast aldehyde dehydrogenase

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Trichoderma reesei cellulase

Supplier: Abnova

Trichoderma reesei cellulase

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Recombinant Tobacco Etch Virus (from E. coli)

Supplier: Abnova

Recombinant Tobacco Etch Virus (from E. coli)

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Synthetic Yeast Inorganic Pyrophosphatase (from E. coli)

Supplier: Abnova

Synthetic Yeast Inorganic Pyrophosphatase (from E. coli)

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Papain

Supplier: Spectrum Chemical

Papain, powder, purified, is a cysteine protease enzyme the is present in the papaya fruit.

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Papain

Supplier: MERCK PRODUCTION CHEMICALS

Papain

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