RNA-Dependent RNA Polymerases of Both Virulent and Benign Rabbit Caliciviruses Induce Striking Rearrangement of Golgi Membranes.

The extremely pathogenic Rabbit haemorrhagic disease virus (RHDV) and the completely benign Rabbit calicivirus (RCV) are closely related members of the genus Lagovirus (family Caliciviridae). The molecular mechanisms that determine the dramatic difference in virulence are unknown, but indirect evide...

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Main Authors: Nadya Urakova, Tanja Strive, Michael Frese
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2017-01-01
Series:PLoS ONE
Online Access:http://europepmc.org/articles/PMC5224886?pdf=render
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author Nadya Urakova
Tanja Strive
Michael Frese
author_facet Nadya Urakova
Tanja Strive
Michael Frese
author_sort Nadya Urakova
collection DOAJ
description The extremely pathogenic Rabbit haemorrhagic disease virus (RHDV) and the completely benign Rabbit calicivirus (RCV) are closely related members of the genus Lagovirus (family Caliciviridae). The molecular mechanisms that determine the dramatic difference in virulence are unknown, but indirect evidence suggests that different properties of their RNA-dependent RNA polymerases (RdRps) may at least partially be responsible for the contrasting phenotypes. Here we report that the unusual ability of the RHDV RdRp to induce a striking rearrangement of the Golgi network is not specific to RHDV, but a common feature of virulent and benign rabbit caliciviruses alike. Expression of rabbit calicivirus RdRps induced a redistribution of both cis/medial and medial/trans Golgi membrane markers, but not that of an endoplasmic reticulum membrane marker. Inactivating mutations in the conserved GDD motif did not abolish the ability of RHDV RdRp to rearrange the Golgi network, suggesting that polymerase activity and metal co-factors are not required for this function. Finally, we discuss possible implications of RdRp-induced membrane rearrangements on virus replication and host immune responses.
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spelling doaj.art-5afbc925026446fe9efbb4f02692b6f32022-12-22T03:11:40ZengPublic Library of Science (PLoS)PLoS ONE1932-62032017-01-01121e016991310.1371/journal.pone.0169913RNA-Dependent RNA Polymerases of Both Virulent and Benign Rabbit Caliciviruses Induce Striking Rearrangement of Golgi Membranes.Nadya UrakovaTanja StriveMichael FreseThe extremely pathogenic Rabbit haemorrhagic disease virus (RHDV) and the completely benign Rabbit calicivirus (RCV) are closely related members of the genus Lagovirus (family Caliciviridae). The molecular mechanisms that determine the dramatic difference in virulence are unknown, but indirect evidence suggests that different properties of their RNA-dependent RNA polymerases (RdRps) may at least partially be responsible for the contrasting phenotypes. Here we report that the unusual ability of the RHDV RdRp to induce a striking rearrangement of the Golgi network is not specific to RHDV, but a common feature of virulent and benign rabbit caliciviruses alike. Expression of rabbit calicivirus RdRps induced a redistribution of both cis/medial and medial/trans Golgi membrane markers, but not that of an endoplasmic reticulum membrane marker. Inactivating mutations in the conserved GDD motif did not abolish the ability of RHDV RdRp to rearrange the Golgi network, suggesting that polymerase activity and metal co-factors are not required for this function. Finally, we discuss possible implications of RdRp-induced membrane rearrangements on virus replication and host immune responses.http://europepmc.org/articles/PMC5224886?pdf=render
spellingShingle Nadya Urakova
Tanja Strive
Michael Frese
RNA-Dependent RNA Polymerases of Both Virulent and Benign Rabbit Caliciviruses Induce Striking Rearrangement of Golgi Membranes.
PLoS ONE
title RNA-Dependent RNA Polymerases of Both Virulent and Benign Rabbit Caliciviruses Induce Striking Rearrangement of Golgi Membranes.
title_full RNA-Dependent RNA Polymerases of Both Virulent and Benign Rabbit Caliciviruses Induce Striking Rearrangement of Golgi Membranes.
title_fullStr RNA-Dependent RNA Polymerases of Both Virulent and Benign Rabbit Caliciviruses Induce Striking Rearrangement of Golgi Membranes.
title_full_unstemmed RNA-Dependent RNA Polymerases of Both Virulent and Benign Rabbit Caliciviruses Induce Striking Rearrangement of Golgi Membranes.
title_short RNA-Dependent RNA Polymerases of Both Virulent and Benign Rabbit Caliciviruses Induce Striking Rearrangement of Golgi Membranes.
title_sort rna dependent rna polymerases of both virulent and benign rabbit caliciviruses induce striking rearrangement of golgi membranes
url http://europepmc.org/articles/PMC5224886?pdf=render
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AT tanjastrive rnadependentrnapolymerasesofbothvirulentandbenignrabbitcalicivirusesinducestrikingrearrangementofgolgimembranes
AT michaelfrese rnadependentrnapolymerasesofbothvirulentandbenignrabbitcalicivirusesinducestrikingrearrangementofgolgimembranes