Component of the Nup107-160 subcomplex of the nuclear pore complex (NPC). The Nup107-160 subcomplex is required for the assembly of a functional NPC. The Nup107-160 subcomplex is also required for normal kinetochore microtubule attachment, mitotic progression and chromosome segregation. This subunit plays a role in recruitment of the Nup107-160 subcomplex to the kinetochore. As a component of the GATOR complex may function in the amino acid-sensing branch of the TORC1 signaling pathway. Component of the Nup107-160 subcomplex of the nuclear pore complex (NPC). Probably part of the GATOR complex. Belongs to the WD repeat SEC13 family.