Electrospray ionization mass spectrometric study of thallium complexes with nucleosides.

Eur J Mass Spectrom (Chichester)

Institute of Chemistry and Technical Electrochemistry, Poznań University of Technology, Poznań, Poland.

Published: October 2017

AI Article Synopsis

  • The study analyzed the interactions between thallium (Tl), potassium (K), and nucleosides using electrospray ionization mass spectrometry, revealing different abundances in the formed complexes.
  • Cytidine-Tl complexes were found to be the most abundant, with guanosine-Tl complexes following, while the abundance of cytidine-Tl relative to cytidine-K complexes changed based on stoichiometry.
  • Thallium consistently resulted in more stable guanosine complexes compared to potassium, suggesting that Tl influences the stabilization of nucleoside tetramers.

Article Abstract

The complexes between Tl, K, and nucleosides were studied by using electrospray ionization mass spectrometry. It was found that for complexes of 1:1 stoichiometry, thallium complexes with cytidine were the most abundant and thallium complexes with guanosine were the second most abundant ones. The relative abundances of cytidine-Tl to cytidine-K complexes depended on stoichiometry (at higher stoichiometry the potassium complexes were more abundant). In other words, the relative affinity of Tl and K to form cytidine complexes depends on the stoichiometry of the formed complexes. Guanosine-Tl complexes were more abundant than guanosine-K complexes, irrespective of stoichiometry. Both guanosine tetramer and mixed cytidine/guanosine tetramer were more abundant when they were stabilized by thallium than potassium. Therefore, Tl may affect the K stabilization of these tetramers.

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http://dx.doi.org/10.1177/1469066717715952DOI Listing

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