Fig. 3.
Immunoprecipitation of wild-type and mutated rfVIII light chain.
Recombinant fVIII fragments labeled with [35S]methionine and expressed in reticulocyte lysates were incubated for 2 hours at 4°C with LE2E9 (LE) bound to Protein A Sepharose. After washing, bound material was eluted by SDS-buffer and analyzed by SDS-PAGE, followed by autoradiography. Controls included a human monoclonal antibody, BO2C11 (BO), directed toward the fVIII C2 domain,19 a rabbit polyclonal IgG antibody (aA3), directed toward amino acid residues 1797-1815 of the fVIII A3 domain and normal donor polyclonal IgG antibodies (Wi). The experiments were repeated 3 times with similar results.