Nup153 Recruits the Nup107-160 Complex to the Inner Nuclear Membrane for Interphasic Nuclear Pore Complex Assembly

Dev Cell. 2015 Jun 22;33(6):717-28. doi: 10.1016/j.devcel.2015.04.027. Epub 2015 Jun 4.

Abstract

In metazoa, nuclear pore complexes (NPCs) are assembled from constituent nucleoporins by two distinct mechanisms: in the re-forming nuclear envelope at the end of mitosis and into the intact nuclear envelope during interphase. Here, we show that the nucleoporin Nup153 is required for NPC assembly during interphase but not during mitotic exit. It functions in interphasic NPC formation by binding directly to the inner nuclear membrane via an N-terminal amphipathic helix. This binding facilitates the recruitment of the Nup107-160 complex, a crucial structural component of the NPC, to assembly sites. Our work further suggests that the nuclear transport receptor transportin and the small GTPase Ran regulate the interaction of Nup153 with the membrane and, in this way, direct pore complex assembly to the nuclear envelope during interphase.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Active Transport, Cell Nucleus
  • Amino Acid Sequence
  • Animals
  • HeLa Cells
  • Humans
  • Interphase
  • Karyopherins / metabolism
  • Models, Biological
  • Molecular Sequence Data
  • Mutagenesis, Site-Directed
  • Nuclear Envelope / metabolism
  • Nuclear Pore / metabolism
  • Nuclear Pore Complex Proteins / chemistry
  • Nuclear Pore Complex Proteins / genetics
  • Nuclear Pore Complex Proteins / metabolism*
  • Nuclear Proteins / metabolism
  • Protein Interaction Domains and Motifs
  • Recombinant Proteins / chemistry
  • Recombinant Proteins / genetics
  • Recombinant Proteins / metabolism
  • Sequence Homology, Amino Acid
  • Xenopus Proteins / chemistry
  • Xenopus Proteins / genetics
  • Xenopus Proteins / metabolism*
  • Xenopus laevis
  • ran GTP-Binding Protein / metabolism

Substances

  • Karyopherins
  • NUP107 protein, human
  • NUP153 protein, human
  • NUP160 protein, human
  • Nuclear Pore Complex Proteins
  • Nuclear Proteins
  • Nup153 protein, Xenopus
  • Nup160 protein, Xenopus
  • Recombinant Proteins
  • Xenopus Proteins
  • ran GTP-Binding Protein