Influence of temperature and interactions with ligands on dissociation of dsDNA and ligand–dsDNA complexes of various types of binding. An electrochemical study
Literature Information
Ewelina Zabost, Anna Maria Nowicka, Zofia Mazerska, Zbigniew Stojek
Several medicinally important compounds that bind to dsDNA strands via intercalation (C-1311, C-1305, EtBr), major groove binding (Hoechst 33258) and covalent binding (cis-Pt) were examined. The obtained results suggest that both the transfer of conformation B to C and the denaturation process, for the ligand–dsDNA complexes, except for covalently bound cis-Pt, took place at higher temperatures compared to the unbound helix. Furthermore, much lower currents of electrooxidation of guanine at 100 °C, compared to the currents obtained at this temperature for dsDNA in the absence of ligands, suggest that the binding of ligands affects the way the dsDNA denaturates at increased temperatures and leads to formation of different forms of DNA single strands. The voltammetric results were compared with the data of two spectroscopic techniques: UV-Vis and CD.
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Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.












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