Journal
VIRUS RESEARCH
Volume 196, Issue -, Pages 94-104Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.virusres.2014.11.001
Keywords
Benyvirus; Protein interaction; Fret-FLIM; Coip; TEM; Dsrna
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Funding
- Iran Ministry of Science, Research and Technology
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Beet necrotic yellow vein virus (BNYVV) is a multipartite positive-strand RNA virus. BNYVV RNA-1 encodes a non-structural p237 polyprotein processed in two proteins (p150 and p66) by a cis-acting protease activity. BNYVV non-structural proteins are closely related to replication proteins of positive strand RNA viruses such as hepeviruses rather to other plant virus replicases. The p237 and dsRNA have been localized by TEM in ER structures of infected leaf cells whereas dsRNA was immunolabeled in infected protoplasts. The p150 contains domains with methyltransferase, protease, helicase and two domains of unknown function whereas p66 encompasses the RNA-dependent RNA-polymerase signature. We report the existing interactions between functional domains of the p150 and p66 proteins and the addressing of the benyvirus replicase to the endoplasmic reticulum. Yeast two-hybrid approach, colocalization with FRET-FLIM analyses and co-immunoprecipitation highlighted existing interactions that suggest the presence of a multimeric complex at the vicinity of the cellular membranous web. (C) 2014 Elsevier B.V. All rights reserved.
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