NPC structure, composition and Nup conservation across eukaryotes.

a) Schematic section through the nuclear pore complex. Sub-complexes are indicated as boxes and marked in different colors to indicate their position in the pore. b) The table summarizes Nup distribution across eukaryotic super-groups. Color-coding matches that of the subcomplexes in (a). Nucleoporins indicated with bold letters are universally distributed across eukaryotes, as judged by presence in at least one genome from each of the five supergroups.