Format

Send to:

Choose Destination
See comment in PubMed Commons below
J Cell Biol. 2005 Nov 7;171(3):437-45.

Centrobin: a novel daughter centriole-associated protein that is required for centriole duplication.

Author information

  • 1Department of Medicine, Division of Cancer Biology, Evanston Northwestern Healthcare Research Institute, Northwestern University Feinberg School of Medicine, Evanston, IL 60201, USA.

Abstract

In mammalian cells, the centrosome consists of a pair of centrioles and amorphous pericentriolar material. The pair of centrioles, which are the core components of the centrosome, duplicate once per cell cycle. Centrosomes play a pivotal role in orchestrating the formation of the bipolar spindle during mitosis. Recent studies have linked centrosomal activity on centrioles or centriole-associated structures to cytokinesis and cell cycle progression through G1 into the S phase. In this study, we have identified centrobin as a centriole-associated protein that asymmetrically localizes to the daughter centriole. The silencing of centrobin expression by small interfering RNA inhibited centriole duplication and resulted in centrosomes with one or no centriole, demonstrating that centrobin is required for centriole duplication. Furthermore, inhibition of centriole duplication by centrobin depletion led to impaired cytokinesis.

PMID:
16275750
[PubMed - indexed for MEDLINE]
PMCID:
PMC2171251
Free PMC Article
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Icon for HighWire Icon for PubMed Central
    Loading ...
    Write to the Help Desk