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The lysine methyltransferase SMYD3 interacts with hepatitis C virus NS5A and is a negative regulator of viral particle production

MPG-Autoren
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Pichlmair,  Andreas
Pichlmair, Andreas / Innate Immunity, Max Planck Institute of Biochemistry, Max Planck Society;

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Zitation

Eberle, C.-A., Zayas, M., Stukalov, A., Pichlmair, A., Alvisi, G., Müller, A. C., et al. (2014). The lysine methyltransferase SMYD3 interacts with hepatitis C virus NS5A and is a negative regulator of viral particle production. VIROLOGY, 462, 34-41. doi:10.1016/j.virol.2014.05.016.


Zitierlink: https://hdl.handle.net/11858/00-001M-0000-0023-DA51-A
Zusammenfassung
Hepatitis C virus (HCV) is a considerable global health and economic burden. The HCV nonstructural protein (NS) 5A is essential for the viral life cycle. The ability of NS5A to interact with different host and viral proteins allow it to manipulate cellular pathways and regulate viral processes, including RNA replication and virus particle assembly. As part of a proteomic screen, we identified several NS5A-binding proteins, including the lysine methyltransferase SET and MYND domain containing protein 3 (SMYD3). We confirmed the interaction in the context of viral replication by co-immunoprecipitation and co-localization studies. Mutational analyses revealed that the MYND-domain of SMYD3 and domain III of NS5A are required for the interaction. Overexpression of SMYD3 resulted in decreased intracellular and extracellular virus titers, whilst viral RNA replication remained unchanged, suggesting that SMYD3 negatively affects HCV particle production in a NS5A-dependent manner. (C) 2014 The Authors. Published by Elsevier Inc.