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In a previous work we have demonstrated that the DNA sequence CGGTGGT folds into a higher order G-quadruplex structure (2Q), obtained by the 5′–5′ stacking of two unusual G(:C):G(:C):G(:C):G(:C) planar octads belonging to two identical tetra-stranded parallel quadruplexes, when annealed in the presence of ammonium or potassium ions. In the present paper, we discuss the role played by the title nucleosides...
We present here a tutorial review on the electrospray mass spectrometry technique and its applications to the study of drug-nucleic acid non-covalent complexes. Particular emphasis has been made on the basic principles of the technique, to allow even the non-specialist to design fit-for-purpose mass spectrometry experiments and interpret the results. Standard applications will be described in detail,...
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