JCB logo
MBL International Tel: 800.200.5459 CLICK HERE
  Home | Help | Feedback | Subscriptions | Archive | Search | Table of Contents

Published online 27 December 2000. doi:10.1083/jcb.151.7.1575
This Article
Right arrow Full Text
Right arrow Full Text (PDF, 421K)
Right arrow Alert me when this article is cited
Right arrow Citation Map
Services
Right arrow Email this article
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new content in the JCB
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via CrossRef
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Skoufias, D. A.
Right arrow Articles by Margolis, R. L.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Skoufias, D. A.
Right arrow Articles by Margolis, R. L.
Right arrowPubmed/NCBI databases
*Gene*GEO Profiles
*HomoloGene*UniGene
*Substance via MeSH
Social Bookmarking
 Add to CiteULike   Add to Complore   Add to Connotea   Add to Del.icio.us   Add to Digg   Add to Reddit   Add to Technorati  
What's this?
© The Rockefeller University Press, 0021-9525/2000/12/1575/ $5.00
The Journal of Cell Biology, Volume 151, Number 7, December 25, 2000 1575-1582


Report

Human Survivin Is a Kinetochore-associated Passenger Protein

Dimitrios A. Skoufiasa, Cristiana Mollinaria, Françoise B. Lacroixa, and Robert L. Margolisa
a Institut de Biologie Structurale Jean-Pierre Ebel (Commissariat á l'Energie Atomique–Centre National de la Recherche Scientifique), 38027 Grenoble Cedex 1, France

Correspondence to: Robert L. Margolis, Institut de Biologie Structurale Jean-Pierre Ebel (CEA-CNRS), 41 rue Jules Horowitz, 38027 Grenoble cedex 1, France. Tel:(33) 4 76 88 96 16 Fax:(33) 4 76 88 54 94 E-mail:margolis{at}ibs.fr.

Survivin, a dimeric baculovirus inhibitor of apoptosis repeat (BIR) motif protein that is principally expressed in G2 and mitosis, has been associated with protection against apoptosis of cells that exit mitosis aberrantly. Mammalian survivin has been reported to associate with centrosomes and with the mitotic spindle. We have expressed a human hemagglutinin-tagged survivin plasmid to determine its localization, and find instead that it clearly acts as a passenger protein. In HeLa cells, survivin first associates with the kinetochores, and then translocates to the spindle midzone during anaphase and, finally, to the midbody during cell cleavage. Its localization is similar to that of TD-60, a known passenger protein. Both a point mutation in the baculovirus IAP repeat motif (C84A) and a COOH-terminal deletion mutant ({Delta}106) of survivin fail to localize to either kinetochores or midbodies, but neither interferes with cell cleavage. The interphase localization of survivin is cell cycle regulated since in permanently transfected NIH3T3 cells it is excluded from the nuclei until G2, where it localizes with centromeres. Survivin remains associated with mitotic kinetochores when microtubule assembly is disrupted and its localization is thus independent of microtubules. We conclude that human survivin is positioned to have an important function in the mechanism of cell cleavage.

Key Words: survivin, mitosis, kinetochore, passenger protein, cytokinesis


Add to CiteULike CiteULike   Add to Complore Complore   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us   Add to Digg Digg   Add to Reddit Reddit   Add to Technorati Technorati    What's this?


This article has been cited by other articles:



  Home | Help | Feedback | Subscriptions | Archive | Search | Table of Contents