On the thermodynamics of folding of an i-motif DNA in solution under favorable conditions
文献情報
Jussara Amato, Federica D’Aria, Simona Marzano, Nunzia Iaccarino, Antonio Randazzo, Concetta Giancola, Bruno Pagano
Under slightly acidic conditions, cytosine-rich DNA sequences can form non-canonical secondary structures called i-motifs, which occur as four stretches of cytosine repeats form hemi-protonated C·C+ base pairs. The growing interest in the i-motif structures as important components in functional DNA-based nanotechnology or as potential targets of anticancer drugs, increases the need for a deep understanding of the energetics of their structural transitions. Here, a combination of spectroscopic and calorimetric techniques is used to unravel the thermodynamics of folding of an i-motif DNA under favorable conditions. The results give new insights into the energetic aspects of i-motifs and show that thermodynamic and thermal stability are related but not identical properties of such DNA structures.
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Physical Chemistry Chemical Physics

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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