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DNA POLYMERASE I, KLENOW FRAGMENT FROM E
Кат. №: D8276-100UN
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Description_x000D_
General description_x000D_
DNA polymerase I yields two fragments (small and large) upon protease digestion. The large fragment (Klenow fragment) loses the 5′ exonuclease activity that is present in the intact holoenzyme. However, it retains both the polymerase 5′→3′ activity and the 3′→5′ exonuclease activity of the native enzyme._x000D_
Application_x000D_
Suitable for:_x000D_
• DNA sequencing by the Sanger dideoxy method_x000D_
• Synthesis of the complementary strand of cDNA_x000D_
• Filling in 5′-overhangs in double stranded DNA to form blunt ends_x000D_
• Mutagenesis of DNA with second strand synthesis using oligonucleotides_x000D_
• Labeling DNA by the random primer method_x000D_
Components_x000D_
DNA Polymerase I is supplied as a solution in 50 mM Tris-HCl (pH 7.5), 1 mM EDTA, 5 mM dithiothretol, and 50% glycerol (v/v) ._x000D_
Unit Definition_x000D_
One unit converts 10 nanomoles of deoxyribonucleoside triphosphates into acid insoluble material in 30 min. at 37 °C._x000D_
Reconstitution_x000D_
The enzyme solution may be diluted with 50 mM Tris-HCl, pH 7.5, 100 mM ammonium sulfate, 10 mM 2-mercaptoethanol, and 1 mg/ml bovine serum albumin._x000D_
Analysis Note_x000D_
The activity is assayed in a reaction mixture containing 50 mM potassium phosphate (pH 7.5), 3 mM MgCl2, 1 mM 2-mercaptoethanol, 32.5 μM 32P-dATP, 32.5 μM dTTP, 62.5 μg/ml poly(dA-dT) and 0.01-1 unit enzyme.
- Related Categories Application Index, Biochemicals and Reagents, Enzymes, Inhibitors, and Substrates, Modifying Enzymes, Molecular Biology, Molecular Biology Enzymes, Molecular Biology Tested, Nucleic Acid Detection and Hybridization, Nucleic Acid Enzymes and ReagentsMore... Quality Level