产地：USA (美国)
存储条件：-20
通过用 IRDye®红外染料末端标记的寡核苷酸替换现有的 DNA 寡核苷酸，迁移率变动分析方案可以轻松转换为红外荧光分析。结合和电泳条件与任何其他 EMSA 检测方法相同。
用 IRDye 700 红外染料末端标记的 DNA 寡核苷酸是蛋白质结合的良好底物。使用 Odyssey®红外成像系统，IRDye 红外染料标记的 DNA 检测在 9.1 fmol 至 0.18 fmol 的 50 倍稀释范围内呈线性。Odyssey EMSA 试剂盒与 IRDye 700 EMSA 寡核苷酸相结合用于 EMSA 分析和可视化，是放射性同位素和化学发光检测方法的绝佳替代方法。使用 IRDye EMSA 试剂，可以在不到两小时内完成检测，无需凝胶转移或胶片曝光。凝胶甚至不需要从玻璃板中取出来进行成像。如果您对电泳进展不够满意，可以将凝胶放回电泳单元并运行更长时间。
试剂盒组成：
10X Binding Buffer (100 mM Tris, 500 mM KCl, 10 mM DTT, pH 7.5), 500 μL
25 mM DTT, 2.5% Tween® 20, 500 µL
Poly (dI•dC), 1 µg/µL in 10 mM Tris, 1 mM EDTA, pH 7.5, 125 µL
Sheared salmon sperm DNA, 0.5 µg/µL in 10 mM Tris, 1 mM EDTA, pH 7.5, 125 µL
50% Glycerol, 500 µL
1% NP-40, 500 µL
1 M KCl, 500 µL
100 mM MgCl2, 500 µL
200 mM EDTA, pH 8.0, 500 µL
10X Orange Loading Dye, 500 µL
储存条件：-20℃

Gel shift assays, or electrophoretic mobility shift assays (EMSA), provide a simple method to study DNA-protein interactions. Existing mobility shift assay protocols can be easily converted to infrared fluorescent assays by replacing the existing DNA oligonucleotides with IRDye® infrared dye end-labeled oligonucleotides. Binding and electrophoresis conditions are the same as any other EMSA detection method. A DNA oligonucleotide end-labeled with IRDye 700 infrared dye is a good substrate for protein binding. Using the Odyssey Infrared Imaging System, IRDye infrared dye labeled DNA detection is linear within a 50-fold dilution range from 9.1 fmol to 0.18 fmol. Infrared assays can be completed in less than two hours with no gel transfer or film exposure. The gel doesn’t even have to be removed from the glass plates for imaging. Plus, the gel can be placed back into the electrophoresis unit and run longer, if necessary.