Conformational switch of insulin-binding aptamer into G-quadruplex induced by K⁺ and Na⁺: an experimental and theoretical approach.


Guanine-rich sequences can form the G-quadruplex structure in the presence of specific metal ions. Here, circular dichroism, UV-vis absorption, fluorescence, and molecular dynamics simulation studies revealed that insulin-binding aptamer (IBA) could form an intramolecular G-quadruplex structure after binding K(+). Circular dichroism (CD) spectra… (More)
DOI: 10.1080/07391102.2014.935482


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