Metal Ion/Buffer Interactions

Metal–DNA interactions

Metal ions can bind to DNA directly or indirectly through hydrogen bonding of the coordinating water molecules surrounding the metal ions. Metal binding to the bases usually disrupts base pair hydrogen bonding and destabilizes the double helix. Spectroscopic and X-ray data shows that the N7 atom of the purine or N3 of pyrimidine residues as well as exocyclic O atoms and the phosphate oxygen ato...

Metal/Nucleic-Acid Interactions

Metal-Based Drug-DNA Interactions

Coordination compounds that bind to DNA have been an active area of research since the discovery of cisplatin and the platinum based drugs. In this review we offer a general overview about transition-metal compounds that binds DNA through several ways and some examples are given to understand the role played by the different factors that promotes it, such as the intercalant ligand and the natur...

Control of metal-directed self-assembly by metal-amine interactions.

The complexation of a tweezers ligand with zinc perchlorate in the absence and presence of amines in methanol solution was explored. L(2)Zn(2)(ClO(4))(4) was a thermodynamic product of the reaction in the absence of an amine. The complex was shown to interact with aliphatic amines resulting in the formation of a Zn-N(amine) bond. If metal-ligand complexation was carried out in the presence of a...

Metal economy in host-microbe interactions

HOST NUTRITIONAL IMMUNITY: DEPRIVING OR POISONING To date, the implication of divalent metals have been described in two different immune strategies that aim to fight microbial invaders. One consists in depriving microbes of essential divalent metals whereas the other aims at overloading invaders with toxic concentrations of metal. The contributions in this section present, in different situati...