ArticleNucleic acids research2024
Structure of an internal loop motif with three consecutive U•U mismatches from stem-loop 1 in the 3'-UTR of the SARS-CoV-2 genomic RNA.
Article in Nucleic acids research, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed.
- A potential RNA-RNA distal interaction competing with a functional pseudoknot in the 3'-untranslated region of SARS-like coronaviruses.Nucleic acids research · 2026Article
- Assessing the contribution of rare DNA states to cancer mutational signatures using sequence-specific conformational fingerprinting.Nature communications · 2026Article
- Integrative In Silico and In Vitro Screening of Low Molecular Weight Compounds Targeting SARS-CoV-2 RNA Elements.Chembiochem : a European journal of chemical biology · 2025Article
- Article
- Revealing hidden protonated conformational states in RNA dynamic ensembles.Nucleic acids research · 2025Article
- Assessing the contribution of rare DNA states to cancer mutational signatures using sequence-specific conformational fingerprinting.Research square · 2025Article
- Integrated NMR and MD structure and dynamics of the stem-loop-II motif (s2m) from the Omicron variant of SARS-CoV-2.RNA (New York, N.Y.) · 2025Article
- ZC3H12D and DDX5 Antagonistically Regulate Cyclin D1 mRNA Stability and Cell Cycle Progression in Breast Cancer.Cancer medicine · 2025Article
- Probing rare and short-lived conformational states in nucleic acids using off-resonance carbonyl and guanidino carbon RJournal of magnetic resonance (San Diego, Calif. : 1997) · 2025Article
- Dissecting the Conformational Heterogeneity of Stem-Loop Substructures of the Fifth Element in the 5'-Untranslated Region of SARS-CoV-2.Journal of the American Chemical Society · 2024Article
Corrections and comments
- Erratum issued
Authors and funding
11 authors.
Funding
Abstract
The single-stranded RNA genome of SARS-CoV-2 is highly structured. Numerous helical stem-loop structures interrupted by mismatch motifs are present in the functionally important 5'- and 3'-UTRs. These mismatches modulate local helical geometries and feature unusual arrays of hydrogen bonding donor and acceptor groups. However, their conformational and dynamical properties cannot be directly inferred from chemical probing and are difficult to predict theoretically. A mismatch motif (SL1-motif) consisting of three consecutive U•U base pairs is located in stem-loop 1 of the 3'-UTR. We combined NMR-spectroscopy and MD-simulations to investigate its structure and dynamics. All three U•U base pairs feature two direct hydrogen bonds and are as stable as Watson-Crick A:U base pairs. Plasmodium falciparum 25S rRNA contains a triple U•U mismatch motif (Pf-motif) differing from SL1-motif only with respect to the orientation of the two closing base pairs. Interestingly, while the geometry of the outer two U•U mismatches was identical in both motifs the preferred orientation of the central U•U mismatch was different. MD simulations and potassium ion titrations revealed that the potassium ion-binding mode to the major groove is connected to the different preferred geometries of the central base pair in the two motifs.
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