 This study investigated how INA molecules are localized within cells. It found that certain INA molecules are localized to specific subcellular regions by interacting with INA binding proteins, RPPs, which can be shared among different cell types. This suggests that the mechanisms underlying INA localization are more universal than previously thought, and that they can be applied to different cell types. This article was authored by Rayan Goering, Ankit Arora, Megan C. Pokolny, and others.