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Sorting Nexin 6 Enhances Lamin A Synthesis and Incorporation into the Nuclear Envelope

Fecha de publicación:

Autores de IIS La Fe

Participantes ajenos a IIS La Fe

  • González-Granado JM
  • Molina-Sanchez P
  • Blanco-Berrocal M
  • Viana R
  • Andrés V

Grupos

Abstract

Nuclear lamins are important structural and functional proteins in mammalian cells, but little is known about the mechanisms and cofactors that regulate their traffic into the nucleus. Here, we demonstrate that trafficking of lamin A, but not lamin B1, and its assembly into the nuclear envelope are regulated by sorting nexin 6 (SNX6), a major component of the retromer that targets proteins and other molecules to specific subcellular locations. SNX6 interacts with lamin A in vitro and in vivo and links it to the outer surface of the endoplasmic reticulum in human and mouse cells. SNX6 transports its lamin A cargo to the nuclear envelope in a process that takes several hours. Lamin A protein levels in the nucleus augment or decrease, respectively, upon gain or loss of SNX6 function. We further show that SNX6-dependent lamin A nuclear import occurs across the nuclear pore complex via a RAN-GTP-dependent mechanism. These results identify SNX6 as a key regulator of lamin A synthesis and incorporation into the nuclear envelope.

Datos de la publicación

ISSN/ISSNe:
1932-6203, 1932-6203

Plos One  PUBLIC LIBRARY SCIENCE

Tipo:
Article
Páginas:
-
Factor de Impacto:
1,559 SCImago ℠

Citas Recibidas en Web of Science: 2

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