 (B) Three different proteins, which have been reported to localize to the cell base during early Drosophila development, were expressed as CIBN fusion proteins in different configurations. Bottleneck (CIBN::Bnk::GFP, CIBN::GFP::Bnk), Slam (GFP-CIBN-Slam) and PatJ (PatJPDZ-CIBN::GFP, PatJ::CIBN, PatJ-CIBN::GFP-CAAX) 