Functions as a component of the nuclear pore complex (NPC) (PubMed:12937276). NPC components, collectively referred to as nucleoporins (NUPs), can play the role of both NPC structural components and of docking or interaction partners for transiently associated nuclear transport factors (By similarity). It is specifically important for nuclear mRNA export (PubMed:12937276). Has a role in neuronal development, where it acts downstream of rpm-1 to control axon termination and synapse formation in anterior lateral microtubule (ALM) and posterior lateral microtubule (PLM) mechanosensory neurons (PubMed:22357847). The nuclear pore complex (NPC) constitutes the exclusive means of nucleocytoplasmic transport (By similarity). NPCs allow the passive diffusion of ions and small molecules and the active, nuclear transport receptor-mediated bidirectional transport of macromolecules such as proteins, RNAs, ribonucleoparticles (RNPs), and ribosomal subunits across the nuclear envelope (By similarity). Interacts with rpm-1 (PubMed:22357847). Expressed along the ventral and dorsal nerve cords. Belongs to the WD repeat rae1 family.