IgG Dog Reduced Jupiter C4 300

应用详细信息 (应用ID: 14909)

尺寸:150 x 2 mm ID
洗脱A:0.1% TFA in Water/Acetonitrile (95:5)
洗脱B:0.085%TFA in Acetonitrile/IPA/Water (75:20:5)
步骤序号 时间 (分) 图片A 图片B
1 0 80 20
2 20 5 95

流速 (毫升/分钟):0.25 mL/min
冷却温度: 室温
检测: UV-Vis Abs.-Diode Array (PDA) @ 220 nm (22°C)
备注:Application Focus: Reducing antibodies to separate heavy and light chains by Jupiter C4

While using IPA in the organic mobile phase can help improve the chromatography of Ig-G, often the best way to observed changes in immunoglobins is by reducing the proteins and separating the heavy and light chain of the protein and analyzing them by HPLC on a Jupiter C4 column. Key to get complete reduction of a protein is to perform the reduction in a chaotrope (either urea or guanidine) to unfold the protein thus breaking up any non-covalent interactions. Upon incubation with DTT, BME or some other reducing reagent, Ig-G heavy and light chains are released and can by separated by HPLC. In this example, dog Ig-G was reduced with 2 mM dithiothreitol in 8 M Urea at 45º C for 30 minutes.

In this example dog Ig-G was reduced with dithiothreitol and injected on a Jupiter 300 C4 column. As shown in App ID# 14909, one can see the heavy and light chains are baseline resolved using the conditions discussed in length in App ID#14908 (20% IPA in the organic mobile phase and elevated temperature). These results demonstrate the ability of the Jupiter 300 C4 to resolve differences between large hydrophobic proteins for demanding applications such as the separation of immunoglobulin proteins.