A nucleoside analogue comprising the ligand 1H-imidazo[4,5-f][1,10]phenanthroline (P) was applied to develop a molecular beacon capable of discriminating the canonical nucleobases cytosine and thymine. The beacon is based on the formation of a stable Ag+-mediated base pair between P and cytosine, whereas the presence of Ag+ strongly destabilizes nucleic acids comprising an artificial base pair between P and thymine. Metal-mediated base pair formation was investigated by temperature-dependent UV spectroscopy and CD spectroscopy and complemented by extensive DFT calculations. The molecular beacon significantly extends the application spectrum of nucleic acids with metal-mediated base pairs. It is of potential use in the detection of single-nucleotide polymorphisms.
|Number of pages||7|
|Publication status||Published - 2017|
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CCDC 1489603: Experimental Crystal Structure Determination
Jash, B. (Contributor), Scharf, P. (Contributor), Sandmann, N. (Contributor), Guerra, C. F. (Contributor), Megger, D. A. (Contributor) & Müller, J. (Contributor), Unknown Publisher, 1 Jan 2017
DOI: 10.5517/ccdc.csd.cc1m01qd, http://www.ccdc.cam.ac.uk/services/structure_request?id=doi:10.5517/ccdc.csd.cc1m01qd&sid=DataCite