Component of ring canals that regulates the flow of cytoplasm between cells. May be involved in the regulation of cytoplasm flow from nurse cells to the oocyte during oogenesis. Binds actin. Inner surface of cytoplasmic bridges or ring canals present in egg chambers. Subcortically in imaginal disk epithelia. Both proteins are expressed in ovaries, male testis, ovariectomized females, cuticle, salivary gland and imaginal disks. Kelch short protein is the predominant form and is also expressed in fat bodies. On entry into metamorphosis levels of full-length protein increase in testis and imaginal disks. Larvae, pupae and adults. Truncated C-terminus.