ArticleScientific reports2023
Determining the defining lengths between mature microRNAs/small interfering RNAs and tinyRNAs.
Article in Scientific reports, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed.
- Central guide-target pairing activates human Argonaute2 by uncoupling the N-PAZ and MID-PIWI lobes.Proceedings of the National Academy of Sciences of the United States of America · 2026Article
- OTTR-CLASH: improved biochemical and bioinformatic identification of Argonaute 2-mediated microRNA-target RNA interactions.bioRxiv : the preprint server for biology · 2026Article
- Structural basis for RISC assembly of human Argonaute2.Molecular cell · 2026Article
- Article
- Development of Dirofilaria immitis adult worms in NSG mice, detection of parasite-derived microRNA and comparative analysis of laboratory isolates.Scientific reports · 2026Article
- The E3 ubiquitin ligase mechanism specifying target-directed microRNA degradation.bioRxiv : the preprint server for biology · 2026Article
- Neurodevelopmental disorder-linked Argonaute mutations permit delayed RISC formation and unusual shortening of miRNAs by 3'→5' trimming.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
- Endogenous Ribonucleases: Therapeutic Targeting of the Transcriptome Through Oligonucleotide-Triggered RNA Inactivation.Biomolecules · 2025Review
- Analysis of Processing, Post-Maturation, and By-Products of shRNA in Gene and Cell Therapy Applications.Methods and protocols · 2025Article
- Comparative structural insights and functional analysis for the distinct unbound states of Human AGO proteins.Scientific reports · 2025Article
- Target cleavage and gene silencing by Argonautes with cityRNAs.Cell reports · 2024Article
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8 authors.
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Abstract
MicroRNAs (miRNAs) and small interfering RNAs (siRNAs) are loaded into Argonaute (AGO) proteins, forming RNA-induced silencing complexes (RISCs). The assembly process establishes the seed, central, 3' supplementary, and tail regions across the loaded guide, enabling the RISC to recognize target RNAs for silencing. This guide segmentation is caused by anchoring the 3' end at the AGO PAZ domain, but the minimum guide length required for the conformation remains to be studied because the current miRNA size defined by Dicer processing is ambiguous. Using a 3' → 5' exonuclease ISG20, we determined the lengths of AGO-associated miR-20a and let-7a with 3' ends that no longer reach the PAZ domain. Unexpectedly, miR-20a and let-7a needed different lengths, 19 and 20 nt, respectively, to maintain their RISC conformation. This difference can be explained by the low affinity of the PAZ domain for the adenosine at g19 of let-7a, suggesting that the tail-region sequence slightly alters the minimum guide length. We also present that 17-nt guides are sufficiently short enough to function as tinyRNAs (tyRNAs) whose 3' ends are not anchored at the PAZ domain. Since tyRNAs do not have the prerequisite anchoring for the standardized guide segmentation, they would recognize targets differently from miRNAs and siRNAs.
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