Dynein is required to traffic Crumbs protein apically in the Drosophila follicle cell epithelium
A) Endogenously tagged knockin Crb-GFP localises apically in the follicle cell epithelium (stage 7/8 egg chamber; scale bar approximately 10 μm).
B) Expression of Dynein hairpin RNAi throughout the follicle cell epithelium with tj.Gal4 causes relocalisation of Crb-GFP to the basal surface of follicle cells. Anti-GFP antibody staining is shown (stage 7/8 egg chamber; scale bar approximately 10 μm).
C) Clonal expression of Dynein hairpin RNAi, marked by expression of nls-GFP, which causes cell-autonomous relocalisation of Crb to the basal surface of follicle cells within the clone (stage 7/8 egg chamber; scale bar approximately 10 μm).
D) Co-immunostaining for Crb and Rab11 upon clonal expression of Dynein hairpin RNAi, marked by expression of nls-GFP, reveals co-localization within basal endosomes (stage 7/8 egg chamber; scale bar approximately 10 μm). Asterisks indicate a clone of cells expressing UAS.Dynein-RNAi.