Dynamics of Nuclear Pore Distribution in Nucleoporin Mutant Yeast Cells - CNRS - Centre national de la recherche scientifique Accéder directement au contenu
Article Dans Une Revue Journal of Cell Biology Année : 1997

Dynamics of Nuclear Pore Distribution in Nucleoporin Mutant Yeast Cells

Naïma Belgareh
Valérie Doye
  • Fonction : Auteur correspondant
  • PersonId : 1222478

Connectez-vous pour contacter l'auteur

Résumé

To follow the dynamics of nuclear pore distribution in living yeast cells, we have generated fusion proteins between the green fluorescent protein (GFP) and the yeast nucleoporins Nup49p and Nup133p. In nup133− dividing cells that display a constitutive nuclear pore clustering, in vivo analysis of GFP-Nup49p localization revealed changes in the distribution of nuclear pore complex (NPC) clusters. Furthermore, upon induction of Nup133p expression in a GAL-nup133 strain, a progressive fragmentation of the NPC aggregates was observed that in turn led to a wild-type nuclear pore distribution. To try to uncouple Nup133p- induced NPC redistribution from successive nuclear divisions and nuclear pore biogenesis, we devised an assay based on the formation of heterokaryons between nup133− mutants and cells either expressing or overexpressing Nup133p. Under these conditions, the use of GFP-Nup133p and GFP-Nup49p fusion proteins revealed that Nup133p can be rapidly targeted to the clustered nuclear pores, where its amino-terminal domain is required to promote the redistribution of preexisting NPCs.

Dates et versions

hal-03969146 , version 1 (02-02-2023)

Identifiants

Citer

Naïma Belgareh, Valérie Doye. Dynamics of Nuclear Pore Distribution in Nucleoporin Mutant Yeast Cells. Journal of Cell Biology, 1997, 136 (4), pp.747-759. ⟨10.1083/jcb.136.4.747⟩. ⟨hal-03969146⟩
5 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More