Related Experiment Video
Updated: Jul 10, 2026

12:59
A Study of the Complexation of Mercury(II) with Dicysteinyl Tetrapeptides by Electrospray Ionization Mass Spectrometry
Published on: January 8, 2016
Preparation of DNA double helical structures containing both mercury and silver ions
Koji Yanagida1, Nagisa Hamochi, Kenichi Sasano
1Department of Chemistry, Graduate School of Science and Engineering, Tokyo Metropolitan University, 1-1 Minamiosawa, Hachioji, Tokyo 192-0397 Japan.
Nucleic Acids Symposium Series (2004)
|November 22, 2007
Abstract:
DNA duplexes consisting of metal-mediated pyrimidine base pairs, T-Hg(II)-T and C-Ag(I)-C, were prepared by mixing short oligodeoxyribonucleotides (ODNs) in the presence of the metal ions. The metal ions were arrayed linearly in the prepared double helical structures. The choice of sequence controls the order of the metal ions.
Related Concept Videos
Formation of Complex Ions
A type of Lewis acid-base chemistry involves the formation of a complex ion (or a coordination complex) comprising a central atom, typically a transition metal cation, surrounded by ions or molecules called ligands. These ligands can be neutral molecules like H2O or NH3, or ions such as CN− or OH−. Often, the ligands act as Lewis bases, donating a pair of electrons to the central atom. These types of Lewis acid-base reactions are examples of a broad subdiscipline called coordination...
Colloidal precipitates
The high insolubility of some precipitates can result in an unfavorable relative supersaturation. This can lead to colloidal particles with a large surface-to-mass ratio, where adsorption is promoted. For instance, in the precipitation of silver chloride, silver ions are adsorbed on the surface of the colloidal particles, forming a primary layer. This layer attracts ions of opposite charge (such as nitrate ions), forming a diffuse secondary layer of adsorbed ions. This electric double layer...

