Porcine reproductive and respiratory syndrome virus envelope (E) protein interacts with mitochondrial proteins and induces apoptosis

Porcine reproductive and respiratory syndrome virus envelope (E) protein interacts with... Porcine reproductive and respiratory syndrome virus (PRRSV) causes significant economic losses for the swine industry worldwide. The PRRSV E protein, encoded by ORF 2b, is one of the non-glycosylated minor structural proteins. In this study, we present evidence for the interaction of the E protein with mitochondrial proteins ATP5A (part of ATP synthase complex), prohibitin, and ADP/ATP translocase. We additionally demonstrate partial mitochondrial localization of the E protein in transfected cells. To functionally investigate these interactions, we infected MARC-145 cells with PRRSV or alphavirus replicon particles (VRPs) expressing PRRSV E protein. In infected cells, production of ATP was significantly reduced. The E protein also induced apoptosis by activating caspase-3, which results in PARP cleavage. Taken together, these data suggest that the PRRSV E protein interacts with mitochondrial proteins and induces apoptosis by inhibiting ATP production. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Virology Springer Journals

Porcine reproductive and respiratory syndrome virus envelope (E) protein interacts with mitochondrial proteins and induces apoptosis

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Publisher
Springer Vienna
Copyright
Copyright © 2016 by Springer-Verlag Wien
Subject
Biomedicine; Virology; Medical Microbiology; Infectious Diseases
ISSN
0304-8608
eISSN
1432-8798
D.O.I.
10.1007/s00705-016-2845-4
Publisher site
See Article on Publisher Site

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