Contributes to proper distribution and/or efficient assembly of nuclear pores. The nuclear pore complex (NPC) constitutes the exclusive means of nucleocytoplasmic transport. 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. The 55-60 MDa NPC is composed of at least 28 different subunits: AMO1, ELYS, GLE1, GLE2, MLP1, NDC1, NIC96, NSP1, NUP133, NUP145, NUP152, NUP159, NUP170, NUP188, NUP192, NUP37, NUP49, NUP53, NUP56, NUP57, NUP82, NUP84, NUP85, POM152, POM33, POM34, SEC13 and SEH1. Due to its 8-fold rotational symmetry, all subunits are present with 8 copies or multiples thereof. Belongs to the PER33/POM33 family.