Probable peripherally associated component of the endosomal sorting required for transport complex III (ESCRT-III) which is involved in multivesicular bodies (MVBs) formation and sorting of endosomal cargo proteins into MVBs. MVBs contain intraluminal vesicles (ILVs) that are generated by invagination and scission from the limiting membrane of the endosome and are delivered to lysosomes enabling degradation of membrane proteins (By similarity). Specifically down-regulates Notch signaling activity in the germarium, probably by facilitating Notch endocytosis (PubMed:24762813). Probable peripherally associated component of the endosomal sorting required for transport complex III (ESCRT-III). Homozygous lethal. RNAi-mediated knockdown in ovarian follicle epithelium results in cell proliferation in the germarium epithelium. Stalks between adjacent egg chambers/ follicles become elongated due to increased number of cells and the linear arrangement of germline cysts is also disturbed. Belongs to the SNF7 family.