Prior to probing a membrane using precious antibodies, it is helpful to visualize the transferred proteins on the blot to ensure complete transfer and even loading. This page describes possible causes and potential remedies for challenges encountered during protein visualization.
To meet the great diversity of protein analysis needs, Sigma offers a wide selection of protein visualization (staining) reagents. EZBlue™ and ProteoSilver™, designed specifically for proteomics, also perform impressively in traditional PAGE formats.
Choose the appropriate markers and ladders for nucleic acid size determination of samples separated by electrophoresis. Determine size of DNA, RNA and PCR-generated fragments using agarose or polyacrylamide gels.
The Auto2D® 2-D Electrophoresis Device fully automates difficult 2D electrophoresis methods in a quick, easy, and reproducible way. Locate difficult-to-find proteins using the Auto2D® system in less than two hours with high reproducibility.
The possible causes and potential remedies for challenges encountered during preparation of samples for SDS-PAGE (sodium dodecyl sulfate polyacrylamide gel electrophoresis) and optimizing electrophoresis conditions.