The role of the nuclear pore complex in adenovirus DNA entry

Adenovirus targets its genome to the cell nucleus by a multistep process involving endocytosis, membrane penetration and cytoplasmic transport, and finally imports its DNA into the nucleus. Using an immunochemical and biochemical approach combined with inhibitors of nuclear import, we demonstrate th...

Full description

Saved in:
Bibliographic Details
Published inThe EMBO journal Vol. 16; no. 19; pp. 5998 - 6007
Main Authors Greber, Urs F., Suomalainen, Maarit, Stidwill, Robert P., Boucke, Karin, Ebersold, Melanie W., Helenius, Ari
Format Journal Article
LanguageEnglish
Published Chichester, UK John Wiley & Sons, Ltd 01.10.1997
Subjects
Online AccessGet full text

Cover

Loading…
More Information
Summary:Adenovirus targets its genome to the cell nucleus by a multistep process involving endocytosis, membrane penetration and cytoplasmic transport, and finally imports its DNA into the nucleus. Using an immunochemical and biochemical approach combined with inhibitors of nuclear import, we demonstrate that incoming viral DNA and DNA‐associated protein VII enter the nucleus via nuclear pore complexes (NPCs). Depletion of calcium from nuclear envelope and endoplasmic reticulum cisternae by ionophores or thapsigargin blocked DNA and protein VII import into the nucleus, but had no effect on virus targeting to NPCs. Calcium‐depleted cells were capable of disassembling incoming virus. In contrast, inhibitors of cytosolic O‐linked glycoproteins of the NPC blocked virus attachment to the nuclear envelope, capsid disassembly and also nuclear import of protein VII. The data indicate that NPCs have multiple roles in adenovirus entry into cells: they contain a virus‐binding and/or dissociation activity and provide a gateway for the incoming DNA genome into the nucleus.
Bibliography:istex:47DC452FF6C240F6BC46B3567632FBA3A7CC5E3E
ark:/67375/WNG-HJ9FGLGC-6
ArticleID:EMBJ7590573
ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ObjectType-Article-1
ObjectType-Feature-2
ISSN:0261-4189
1460-2075
DOI:10.1093/emboj/16.19.5998