Part of the nuclear pore complex (NPC). The NPC has an eight-fold symmetrical structure comprising a central transport channel and two rings, the cytoplasmic and nuclear rings, to which eight filaments are attached. The cytoplasmic filaments have loose ends, while the nuclear filaments are joined in a distal ring, forming a nuclear basket. NPCs are highly dynamic in configuration and composition, and can be devided in 3 subcomplexes, the NUP62 subcomplex, the NUP107-160 subcomplex and the NUP93 subcomplex, containing approximately 30 different nucleoporin proteins. Interacts with DDB1A. The DWD box is required for interaction with DDB1A. Belongs to the WD repeat rae1 family.