Nuclear pore complex structure and dynamics revealed by cryoelectron tomography

Martin Beck, Friedrich Förster, Mary Ecke, Jürgen M. Plitzko, Frauke Melchior, Günther Gerisch, Wolfgang Baumeister, Ohad Medalia

Research output: Contribution to journalArticlepeer-review

397 Scopus citations

Abstract

Nuclear pore complexes (NPCs) are gateways for nucleocytoplasmic exchange. To analyze their structure in a close-to-life state, we studied transport-active, intact nuclei from Dictyostelium discoideum by means of cryoelectron tomography. Subvolumes of the tomograms containing individual NPCs were extracted in silico and subjected to three-dimensional classification and averaging, whereby distinct structural states were observed. The central plug/transporter (CP/T) was variable in volume and could occupy different positions along the nucleocytoplasmic axis, which supports the notion that it essentially represents cargo in transit. Changes in the position of the CP/T were accompanied by structural rearrangements in the NPC scaffold.

Original languageEnglish
Pages (from-to)1387-1390
Number of pages4
JournalScience
Volume306
Issue number5700
DOIs
StatePublished - 19 Nov 2004
Externally publishedYes

ASJC Scopus subject areas

  • General

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