RANBP2 (RAN binding protein 2)

The RAN-binding protein 2 (RANBP2) or Nucleoporin 358 (NUP358, nucleoporin of 358 kDa) is the largest component of nuclear pore complexes (NPCs). The latter are highly complex structures composed of several orderly assembled proteins, called nucleoporins (NUPs), that represent gateways across the nuclear envelope (NE) for the exchange of macromolecules between the nucleus and the cytoplasm. This exchange is critical to many essential processes, e.g., DNA replication, DNA repair, DNA damage response, establishment of functional chromatin domains, replication checkpoint, transcriptional and epigenetic regulation of genes and genome function, mitotic entry.