Iron is a key element in metabolic and signaling functions of bacteria due to its involvement in major biological processes, including cellular respiration, DNA synthesis, oxygen transport, and defense mechanism towards reactive oxygen species (ROS) [52–54]. During infection, bacteria are faced with...
relationship. The interactions between the metal ions and the carboxylate group were (a) monodentate fashion when Δν>200 cm−1, (b) bidentate/chelating fashion when Δνis smaller than ionic form, and (c) bridging bidentate when Δνhas nearly ionic values. The observed Δνvalues for ...
Keep away from alkaline materials, strong bases, strong acids, oxoacids, and epoxides such as lyes, halogens, and alloys of aluminum. Contact with hydrogen chloride/ hydrochloric acid or hydrogen peroxide may result in explosion. Corrosive on contact with metals. Moisture, oxygen, and air ...
When a gallium alloy droplet was used as an anode and solid copper was used as a cathode in the method of electrowetting [78], at an appropriate pH, oxygen was reduced at the cathode and oxidation of gallium proceeded significantly on the anode. Then gallium (III) oxide which affords ...
Gallium reacts with the chalcogens only at relatively high temperatures. At room temperature, gallium metal is not reactive with air and water because it forms a passive, protective oxide layer. At higher temperatures, however, it reacts with atmospheric oxygen to form gallium(III) oxide, Ga ...
Based on these experimental results, it is concluded that the availability of oxygen and/or nitrogen moieties in the ligand, and the ability to form a 3:1 complex with gallium, is not predictive of utility as an agent for oral delivery of gallium or of gallium oral bioavailability. Reference...
Moreover, elevated intracellular iron could catalyze the formation of pro-carcinogenic reactive oxygen species (ROS). 3.2. Gallium transport and cellular uptake The human body appears to handle gallium as iron with regard to its transport in the blood. Clues to similarities between gallium and iron...
In the fingerprint plot, for the [PTA(O)-H] cation in 4, the contacts are mostly with hydrogen and oxygen atoms of the cations (70% and 10%, respectively) and with the iodine anion (15%) (Fig. S38 and S39†). In addition to the signals due to the protonated N–H groups, ...
Despite having a bandgap, pure GaAs at room temperature behaves like an insulator due to its very low intrinsic concentration. However, it is possible to modulate the conductivity by doping the GaAs. Oxygen atoms entering the As lattice sites behave as donors with energy levels of the order of...
Presently, the preferred positron-emitting isotopes for use in radiopharmaceutical preparations are oxygen-15, carbon-11, nitrogen-13 and fluorine-18. Unfortunately, all of these positron-emitting isotopes have a short half-life of less than 2 hours. Because of these short half-lives, it is nece...