ArticleVirology journal2021
Efficient translation of Eggplant mottled dwarf nucleorhabdovirus N and X genes requires both 5' and 3' UTRs.
Article in Virology journal, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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0 citing papers in PubMed, 3 citations in OpenAlex.
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3 authors at 3 institutions in 1 country.
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Abstract
backgroundCircularization of RNA mediated by association of translation factors and RNA elements in 5' and 3' UTRs is a common feature for translation control in eukaryotes. There is no information about translation in plant rhabdoviruses and little information is known in animal rhabdoviruses.
methodsThe role of 5' and 3' UTRs in two genes of EMDV in translation were studied using luciferase constructs and RNA structures of these sequences were analyzed by SHAPE and Inline probing.
resultsWe have found that efficient translation of N and X mRNAs of nucleorhabdovirus Eggplant mottled dwarf virus (EMDV) requires elements present in both 5' and 3' UTRs. Luciferase reporter constructs containing precise 5' and 3' UTRs of the N and X genes had substantially higher translational activity compared with constructs containing only the 5' or 3' UTR. The 3'UTR of carmovirus Turnip crinkle virus, which contains a well-characterized cap-independent translation enhancer, was unable to complement the lack of EMDV 3' UTR. Addition of cap analog to luciferase constructs containing the UTRs of the N gene did not restore translation, and translation of the reporter construct in the absence of the 5' cap was higher than the capped construct. No RNA-RNA interactions between 5' and 3' UTRs were detected by EMSA or in-line cleavage structural assays. Deletion of 11 nucleotides from the 3' terminus negated the synergistic activity of the 3'UTR.
conclusionsThe results with RNA-RNA interaction suggesting that translational synergy between the UTRs may utilize alternative means. Mutation analysis in 3'UTR suggesting that the polyadenylation signal sequence contained in this location may play a critical role in translation.
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