Access to a stabilized i -motif DNA structure through four successive ligation reactions on a cyclopeptide scaffold - Archive ouverte HAL
Article Dans Une Revue Organic & Biomolecular Chemistry Année : 2020

Access to a stabilized i -motif DNA structure through four successive ligation reactions on a cyclopeptide scaffold

Résumé

I-motifs are largely underexplored tetraplex nucleic acid structures which have been suggested to play essential biological functions and might constitute future therapeutic targets. I-motifs generally require acidic conditions to fold in vitro, a particularity which significantly complicates the use of native i-motif forming sequences for interactions studies with potential ligands and biological components (e.g. proteins). In this context, we report herein on the assembly of a peptide-DNA conjugate capable to fold at room temperature into a stable i-motif structure at neutral pH. To achieve the controlled assembly of the i-motif forming conjugate, we developed a new synthetic pathway of four successive orthogonal ligation reactions between bifunctional Crich DNA strands and a tetrafunctional cyclopeptide scaffold.
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Dates et versions

hal-03001772 , version 1 (23-11-2020)

Identifiants

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Alexandre Devaux, Laureen Bonnat, Thomas Lavergne, Eric Defrancq. Access to a stabilized i -motif DNA structure through four successive ligation reactions on a cyclopeptide scaffold. Organic & Biomolecular Chemistry, 2020, 18 (32), pp.6394-6406. ⟨10.1039/D0OB01311K⟩. ⟨hal-03001772⟩
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