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  4. An essential Aurora-related kinase transiently associates with spindle pole bodies during Plasmodium falciparum erythrocytic schizogony
 
research article

An essential Aurora-related kinase transiently associates with spindle pole bodies during Plasmodium falciparum erythrocytic schizogony

Reininger, Luc  
•
Wilkes, Jonathan M.
•
Bourgade, Helene
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2011
Molecular Microbiology

Aurora kinases compose a family of conserved Ser/Thr protein kinases playing essential roles in eukaryotic cell division. To date, Aurora homologues remain uncharacterized in the protozoan phylum Apicomplexa. In malaria parasites, the characterization of Aurora kinases may help understand the cell cycle control during erythrocytic schizogony where asynchronous nuclear divisions occur. In this study, we revisited the kinome of Plasmodium falciparum and identified three Aurora-related kinases, Pfark-1, -2, -3. Among these, Pfark-1 is highly conserved in malaria parasites and also appears to be conserved across Apicomplexa. By tagging the endogenous Pfark-1 gene with the green fluorescent protein (GFP) in live parasites, we show that the Pfark-1-GFP protein forms paired dots associated with only a subset of nuclei within individual schizonts. Immunofluorescence analysis using an anti-a-tubulin antibody strongly suggests a recruitment of Pfark-1 at duplicated spindle pole bodies at the entry of the M phase of the cell cycle. Unsuccessful attempts at disrupting the Pfark-1 gene with a knockout construct further indicate that Pfark-1 is required for parasite growth in red blood cells. Our study provides new insights into the cell cycle control of malaria parasites and reports the importance of Aurora kinases as potential targets for new antimalarials.

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Type
research article
DOI
10.1111/j.1365-2958.2010.07442.x
Web of Science ID

WOS:000285762100017

Author(s)
Reininger, Luc  
Wilkes, Jonathan M.
Bourgade, Helene
Miranda-Saavedra, Diego
Doerig, Christian  
Date Issued

2011

Publisher

Wiley-Blackwell

Published in
Molecular Microbiology
Volume

79

Issue

1

Start page

205

End page

221

Subjects

Multiple Sequence Alignment

•

Protein-Kinase

•

Chromosome Segregation

•

Cell-Division

•

Malaria Parasites

•

A Kinase

•

Cycle

•

Evolutionary

•

Identification

•

Activation

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
INSERM-EPFL  
Available on Infoscience
December 16, 2011
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/74478
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