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Journal of Virology, June 2009, p. 5854-5863, Vol. 83, No. 11
0022-538X/09/$08.00+0 doi:10.1128/JVI.00039-09
Copyright © 2009, American Society for Microbiology. All Rights Reserved.

and
Jean Rommelaere
Program Infection and Cancer, Abteilung F010 and Institut National de la Santé et de la Recherche Médicale U701, Deutsches Krebsforschungszentrum, Heidelberg, Germany
Received 8 January 2009/ Accepted 17 March 2009
The propagation of autonomous parvoviruses is strongly dependent on the phosphorylation of the major nonstructural protein NS1 by members of the protein kinase C (PKC) family. Minute virus of mice (MVM) replication is accompanied by changes in the overall phosphorylation pattern of NS1, which is newly modified at consensus PKC sites. These changes result, at least in part, from the ability of MVM to modulate the PDK-1/PKC pathway, leading to activation and redistribution of both PDK-1 and PKC
. We show that proteins of the ezrin-radixin-moesin (ERM) family are essential for virus propagation and spreading through their functions as adaptors for PKC
. MVM infection led to redistribution of radixin and moesin in the cell, resulting in increased colocalization of these proteins with PKC
. Radixin was found to control the PKC
-driven phosphorylation of NS1 and newly synthesized capsids in vivo. Conversely, radixin phosphorylation and activation were driven by the NS1/CKII
complex. Altogether, these data argue for ERM proteins being both targets and modulators of parvovirus infection.
Published ahead of print on 25 March 2009.
Present address: Protein Phosphorylation Laboratory, Cancer Research UK London Research Institute, 44 Lincoln's Inn Fields, London WC2A 3PX, United Kingdom.
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