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- W4328049550 abstract "Abstract In plants, microRNA (miRNA)—target interactions (MTIs) require high complementarity, a feature from which bioinformatic programs have predicted numerous and diverse targets for any given miRNA, promoting the idea of complex miRNA networks. Opposing this is a hypothesis of constrained miRNA specificity, in which functional MTIs are restricted to the few targets whose required expression output is compatible with the expression of the miRNA. To explore these opposing views, the bioinformatic pipeline Targets Ranked Using Experimental Evidence was applied to strongly conserved miRNAs to identity their high-evidence (HE) targets across species. For each miRNA family, HE targets predominantly consisted of homologs from one conserved target gene family (primary family). These primary families corresponded to the known canonical miRNA–target families, validating the approach. Very few additional HE target families were identified (secondary family), and if so, they were likely functionally related to the primary family. Many primary target families contained highly conserved nucleotide sequences flanking their miRNA-binding sites that were enriched in HE homologs across species. A number of these flanking sequences are predicted to form conserved RNA secondary structures that preferentially base pair with the miRNA-binding site, implying that these sites are highly structured. Our findings support a target landscape view that is dominated by the conserved primary target families, with a minority of either secondary target families or non-conserved targets. This is consistent with the constrained hypothesis of functional miRNA specificity, which potentially in part is being facilitated by features beyond complementarity." @default.
- W4328049550 created "2023-03-22" @default.
- W4328049550 creator A5018152109 @default.
- W4328049550 creator A5038759115 @default.
- W4328049550 date "2023-03-20" @default.
- W4328049550 modified "2023-09-27" @default.
- W4328049550 title "Target landscape of conserved plant microRNAs and the complexities of their ancient microRNA binding-sites." @default.
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- W4328049550 doi "https://doi.org/10.1093/pcp/pcad019" @default.
- W4328049550 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/36943747" @default.
- W4328049550 hasPublicationYear "2023" @default.
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