I wanna get a suitable protocol for depletion of IgG and other immunoglobulins from serum, without kits or chromatography but with chemical methods like ammonium sulfate. Can anyone help me? Does anyone have any experiences about it?
I need to do western blot of serum to detect a specific protein in place of heavy and light chain of immunoglobulins , 50 KD . For this reason, I have to delete immunoglobulin from serum that don't interrupt with my detecting of protein in this site.
Totally avoid reducing agents like 2-mercaptoethanol or dithiothreitol. Following SDS-PAGE under NON-reducing conditions, (heat for only a few min), IgG will land at 150 kDa far away from your target molecule.