Fritz is a probable effector of the planar cell polarity signaling pathway which regulates the septin cytoskeleton in both ciliogenesis and collective cell movements. In Drosophila melanogaster, fritz regulates both the location and the number of wing cell prehair initiation sites [1].

1: The WD40 repeat protein fritz links cytoskeletal planar polarity to frizzled subcellular localization in the Drosophila epidermis. Collier S, Lee H, Burgess R, Adler P; Genetics. 2005;169:2035-2045. PMID:15654087