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- W4313456813 abstract "Abstract As an essential post-transcriptional regulator of gene expression, microRNA (miR) levels must be strictly maintained. The biogenesis of many, but not all, miRs is mediated by trans-acting protein partners through a variety of mechanisms, including remodeling of the RNA structure. miR-31 functions as an oncogene in numerous cancers and interestingly, its biogenesis is not known to be regulated by protein binding partners. Therefore, the intrinsic structural properties of pre-miR-31 can provide a mechanism by which its biogenesis is regulated. We determined the solution structure of the precursor element of miR-31 (pre-miR-31) to investigate the role of distinct structural elements in regulating Dicer processing. We found that the presence or absence of mismatches within the helical stem do not strongly influence Dicer processing of the pre-miR. However, both the apical loop size and structure at the Dicing site are key elements for discrimination by Dicer. Interestingly, our NMR-derived structure reveals the presence of a triplet of base pairs that link the Dicer cleavage site and the apical loop. Mutational analysis in this region suggests that the stability of the junction region strongly influence both Dicer binding and processing. Our results enrich our understanding of the active role that RNA structure plays in regulating Dicer processing which has direct implications for control of gene expression." @default.
- W4313456813 created "2023-01-06" @default.
- W4313456813 creator A5001913548 @default.
- W4313456813 creator A5027703906 @default.
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- W4313456813 creator A5047833245 @default.
- W4313456813 creator A5091661816 @default.
- W4313456813 date "2023-01-03" @default.
- W4313456813 modified "2023-09-23" @default.
- W4313456813 title "Structure of pre-miR-31 reveals an active role in Dicer processing" @default.
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- W4313456813 doi "https://doi.org/10.1101/2023.01.03.519659" @default.
- W4313456813 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/36711709" @default.
- W4313456813 hasPublicationYear "2023" @default.
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