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35 nucleotide 5 cy5 labelled and hplc purified dna oligonucleotides

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35 nucleotide 5′‐Cy5‐labelled and HPLC‐purified DNA oligonucleotides.

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2 protocols using 35 nucleotide 5 cy5 labelled and hplc purified dna oligonucleotides

1

Electrophoretic Mobility Shift Assay for DNA-Protein Interactions

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35 nucleotide 5′‐Cy5‐labelled and HPLC‐purified DNA oligonucleotides were purchased from Sigma. To generate dsDNA, equimolar amounts of forward and reverse ssDNA oligonucleotides were mixed in 1xSSC buffer (150 mM NaCl, 15 mM sodium citrate) and incubated for 2 min at 90°C in a Thermomixer. The temperature was reduced to 60°C for 5 min and then further reduced to 20°C for 30 min. For EMSA, 50 nM of nucleic acids was mixed with increasing concentrations of recombinant proteins in a buffer containing 20 mM Tris–HCl pH 8.0, 100 mM KCl, 3mM MgCl2, 1 mM EDTA pH 8.0, 5% glycerol, 0.05% NP‐40, 2 mM DTT, 50 ng/ml yeast tRNA (Thermo Fisher) and 2.5 ng/ml BSA (NEB). Samples were incubated at 4°C with rotation for 1 h and resolved on a 4% polyacrylamide (60:1) gel (25 mM Tris–HCl, 200 mM glycine, 5% glycerol, 0.075% APS, 0.05% TEMED) in 12.5 mM Tris–HCl and 100 mM glycine. The Cy5 signal was scanned on a Typhoon FLA 9500 fluorescence scanner.
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2

Electrophoretic Mobility Shift Assay

Check if the same lab product or an alternative is used in the 5 most similar protocols
35 nucleotide 5'-Cy5 labelled and HPLC-purified DNA oligonucleotides were purchased from Sigma. To generate dsDNA, equimolar amounts of forward and reverse ssDNA oligonucleotides were mixed in 1xSSC buffer (150 mM NaCl, 15 mM sodium citrate) and incubated for 2 minutes at 90°C in a Thermomixer. The temperature was reduced to 60°C for 5 minutes, then further reduced to 20°C for 30 minutes. For EMSA, 50 nM of nucleic acids were mixed with increasing concentrations of recombinant proteins in a buffer containing 20 mM Tris-HCl pH 8.0, 100 mM KCl, 3mM MgCl2, 1 mM EDTA pH 8.0, 5% glycerol, 0.05% NP40, 2 mM DTT, 50 ng/ml yeast tRNA (ThermoFisher) and 2.5 ng/ml BSA (NEB). Samples were incubated at 4°C with rotation for 1 hour and resolved on a 4% polyacrylamide (60:1) gel (25 mM Tris-HCl, 200 mM glycine, 5% glycerol, 0.075% APS, 0.05% TEMED) in 12.5 mM Tris-HCl and 100 mM glycine. The Cy5 signal was scanned on a Typhoon FLA 9500 fluorescence scanner.
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