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| | HCV Replicon Assay |
| Description: | The HCV NS5B reaction was performed in a 20 μL mixture containing varying concentrations of the test compound, 1 μM of all four natural ribonucleotides, [α-32P]UTP, 20 ng/μL of genotype 1b (−) IRES RNA template, 1 unit/μL of SUPERase·In (Ambion, Austin, Tex.), 40 ng/μL of wild type or S282T NS5B Genotype 1b, 1 mM MgCl2, 0.75 mM MnCl2, and 2 mM DTT in 50 mM Hepes buffer (pH 7.5). The reaction was quenched by adding 80 μL of stop solution (12.5 mM EDTA, 2.25 M NaCl, and 225 mM sodium citrate) after incubating at 27° C. for 30 minutes. The radioactive RNA products were separated from unreacted substrates by passing the quenched reaction mixture through a Hybond N+ membrane (GE Healthcare, Piscataway, N.J.) using a dot-blot apparatus. The RNA products were retained on the membrane and the free nucleotides were washed out. The membrane was washed 4 times with a solution containing 0.6 M NaCl and 60 mM sodium citrate. After rinsing the membrane with water followed by ethanol, the membrane was exposed to a phosphorscreen and the products were visualized and quantified using a phosphorimager. |
| Affinity data for this assay | |
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