1. Vaccinia Virus-Induced Cell Motility Requires F11L-Mediated Inhibition of RhoA Signaling
- Author
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Sibylle Schleich, João V. Cordeiro, Friedrich Frischknecht, Ferran Valderrama, and Michael Way
- Subjects
RHOA ,Genes, Viral ,Pyridines ,Recombinant Fusion Proteins ,viruses ,Morphogenesis ,Motility ,Vaccinia virus ,Protein Serine-Threonine Kinases ,Transfection ,Cell Line ,Viral Proteins ,Cell Movement ,RNA interference ,Animals ,Humans ,Enzyme Inhibitors ,RNA, Small Interfering ,Cytoskeleton ,rho-Associated Kinases ,Multidisciplinary ,biology ,Kinase ,Virus Assembly ,Intracellular Signaling Peptides and Proteins ,Cell migration ,Phosphoproteins ,Amides ,Protein Structure, Tertiary ,Cell biology ,Cytoskeletal Proteins ,biology.protein ,RNA Interference ,Signal transduction ,rhoA GTP-Binding Protein ,HeLa Cells ,Protein Binding ,Signal Transduction - Abstract
RhoA signaling plays a critical role in many cellular processes, including cell migration. Here we show that the vaccinia F11L protein interacts directly with RhoA, inhibiting its signaling by blocking the interaction with its downstream effectors Rho-associated kinase (ROCK) and mDia. RNA interference–mediated depletion of F11L during infection resulted in an absence of vaccinia-induced cell motility and inhibition of viral morphogenesis. Disruption of the RhoA binding site in F11L, which resembles that of ROCK, led to an identical phenotype. Thus, inhibition of RhoA signaling is required for both vaccinia morphogenesis and virus-induced cell motility.
- Published
- 2006
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