Effects of TDP2/VPg unlinkase activity on picornavirus infections downstream of virus translation

AC Holmes, G Zagnoli-Vieira, KW Caldecott, BL Semler - Viruses, 2020 - mdpi.com
In this study, we characterized the role of host cell protein tyrosyl-DNA phosphodiesterase 2
(TDP2) activity, also known as VPg unlinkase, in picornavirus infections in a human cell …

Divergent requirement for a DNA repair enzyme during enterovirus infections

S Maciejewski, JHC Nguyen, F Gómez-Herreros… - MBio, 2016 - Am Soc Microbiol
Viruses of the Enterovirus genus of picornaviruses, including poliovirus, coxsackievirus B3
(CVB3), and human rhinovirus, commandeer the functions of host cell proteins to aid in the …

An RNA virus hijacks an incognito function of a DNA repair enzyme

R Virgen-Slane, JM Rozovics… - Proceedings of the …, 2012 - National Acad Sciences
A previously described mammalian cell activity, called VPg unlinkase, specifically cleaves a
unique protein–RNA covalent linkage generated during the viral genomic RNA replication …

Engineered picornavirus VPg-RNA substrates: analysis of a tyrosyl-RNA phosphodiesterase activity

JM Rozovics, R Virgen-Slane, BL Semler - PLoS One, 2011 - journals.plos.org
Using poliovirus, the prototypic member of Picornaviridae, we have further characterized a
host cell enzymatic activity found in uninfected cells, termed “unlinkase,” that recognizes and …

VPg unlinkase/TDP2 in cardiovirus infected cells: Re-localization and proteolytic cleavage

S Maciejewski, W Ullmer, BL Semler - Virology, 2018 - Elsevier
Cardioviruses cause diseases in many animals including, in rare cases, humans. Although
they share common features with all picornaviruses, cardioviruses have unique properties …

Enterovirus 71 VPg uridylation uses a two-molecular mechanism of 3D polymerase

Y Sun, Y Wang, C Shan, C Chen, P Xu, M Song… - Journal of …, 2012 - Am Soc Microbiol
VPg uridylylation is essential for picornavirus RNA replication. The VPg uridylylation
reaction consists of the binding of VPg to 3D polymerase (3Dpol) and the transfer of UMP by …

PDTC inhibits picornavirus polyprotein processing and RNA replication by transporting zinc ions into cells

K Lanke, BM Krenn, WJG Melchers… - Journal of general …, 2007 - microbiologyresearch.org
Previously, it was shown that pyrrolidine dithiocarbamate (PDTC) inhibits proteolytic
polyprotein processing and replication of human rhinovirus by transporting metal ions into …

mRNA decapping enzyme 1a (Dcp1a)-induced translational arrest through protein kinase R (PKR) activation requires the N-terminal enabled vasodilator-stimulated …

JD Dougherty, LC Reineke, RE Lloyd - Journal of Biological Chemistry, 2014 - ASBMB
We have shown previously that poliovirus infection disrupts cytoplasmic P-bodies in infected
mammalian cells. During the infectious cycle, poliovirus causes the directed cleavage of …

Crystal Structure of Enterovirus 71 RNA-Dependent RNA Polymerase Complexed with Its Protein Primer VPg: Implication for a trans Mechanism of VPg Uridylylation

C Chen, Y Wang, C Shan, Y Sun, P Xu, H Zhou… - Journal of …, 2013 - Am Soc Microbiol
Picornavirus RNA replication is initiated by VPg uridylylation, during which the hydroxyl
group of the third tyrosine residue of the virally encoded protein VPg is covalently linked to …

Formation of Potato Virus A-Induced RNA Granules and Viral Translation Are Interrelated Processes Required for Optimal Virus Accumulation

A Hafrén, A Lohmus, K Mäkinen - PLoS pathogens, 2015 - journals.plos.org
RNA granules are cellular structures, which play an important role in mRNA translation,
storage, and degradation. Animal (+) RNA viruses often co-opt RNA granule proteins for …