ArticleCommunications chemistry2025
Enzymatic synthesis of reactive RNA probes containing squaramate-linked cytidine or adenosine for bioconjugations and cross-linking with lysine-containing peptides and proteins.
Article in Communications chemistry, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Enzymatic Synthesis of Modified RNA Containing 5-Methyl- or 5-Ethylpyrimidines or Substituted 7-Deazapurines and Influence of the Modifications on Stability, Translation, and CRISPR-Cas9 Cleavage.ACS chemical biology · 2025Article
- Investigation of a squaramide motif as a bioisostere of the amino-acid group of S-adenosyl-L-methionine and its functional impact on RNA methylation.Communications chemistry · 2025Article
- Synthesis of 2-Substituted Adenosine Triphosphate Derivatives and their use in Enzymatic Synthesis and Postsynthetic Labelling of RNA.Chembiochem : a European journal of chemical biology · 2025Article
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Authors and funding
8 authors.
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Abstract
Protein-RNA interactions play important biological roles and hence reactive RNA probes for cross-linking with proteins are important tools in their identification and study. To this end, we designed and synthesized 5'-O-triphosphates bearing a reactive squaramate group attached to position 5 of cytidine or position 7 of 7-deazaadenosine and used them as substrates for polymerase synthesis of modified RNA. In vitro transcription with T7 RNA polymerase or primer extension using TGK polymerase was used for synthesis of squaramate-modified RNA probes which underwent covalent bioconjugations with amine-linked fluorophore and lysine-containing peptides and proteins including several viral RNA polymerases or HIV reverse transcriptase. Inhibition of RNA-depending RNA polymerases from Japanese Encephalitis virus was observed through formation of covalent cross-link which was partially identified by MS/MS analysis. Thus, the squaramate-linked NTP analogs are useful building blocks for the synthesis of reactive RNA probes for bioconjugations with primary amines and cross-linking with lysine residues.
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Registered trials
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