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Virology

Possible involvement of eEF1A in Tomato spotted wilt virus RNA synthesis.


PMID 25151062

Abstract

Tomato spotted wilt virus (TSWV) is a negative-strand RNA virus in the family Bunyaviridae and propagates in both insects and plants. Although TSWV can infect a wide range of plant species, host factors involved in viral RNA synthesis of TSWV in plants have not been characterized. In this report, we demonstrate that the cell-free extract derived from one of the host plants can activate mRNA transcriptional activity of TSWV. Based on activity-guided fractionation of the cell-free extract, we identified eukaryotic elongation factor (eEF) 1A as a possible host factor facilitating TSWV transcription and replication. The RNA synthesis-supporting activity decreased in the presence of an eEF1A inhibitor, suggesting that eEF1A plays an important role in RNA synthesis of TSWV.

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