Generation of polyclonal antibodies against multiple proteins in a single rabbit and subsequent isolation of the specific immunoglobulins as a tool for proteomics research

A single rabbit has been immunized with a mixture of six different proteins: green fluorescent protein, ferredoxin:NADP oxidoreductase, NADPH:thioredoxin reductase, thioredoxin f, fructose bisphosphatase and cyclophilin. Individual IgGs were repurified from the serum through specific interaction on small columns generated by grafting the antigen on a CNBr-Sepharose matrix. The specificity of the isolated IgG was checked by Western-blot analysis. Purified and specific IgG fractions were obtained with all antigens except thioredoxin f.