The identification and characterization of genes involved in the microbial oxidation of arsenite will contribute to our understanding of factors controlling As cycling in natural systems. Towards this goal, we recently characterized the widespread occurrence of aerobic arsenite oxidase genes (aroA-like) from pure-culture bacterial isolates, soils, sediments and geothermal mats, but were unable ...

A DNA fragment containing the aroA(G) gene of Bacillus subtilis 168, encoding 3-deoxy-D-arabino-heptulosonate 7-phosphate (DAHP) synthase-chorismate mutase, was cloned and sequenced. The N-terminus of the protein encoded by aroA(G) showed homology with chorismate mutase encoded by aroH of B. subtilis and with the chorismate mutase parts of proteins encoded by the pheA and tyrA genes of Escheric...

Salmonella has a natural ability to target a wide range of tumors in animal models. However, strains used for cancer therapy have generally been selected only for their avirulence rather than their tumor-targeting ability. To select Salmonella strains that are avirulent and yet efficient in tumor targeting, a necessary criterion for clinical applications, we measured the relative fitness of 41,...

Objective(s) Staphylococcus aureus is both a successful human commensal and a major pathogen. In this study we investigated the genetic diversity of 26 S. aureus isolates recovered from human skin and urinary tract infections. Materials and Methods Typing procedure for the studied S. aureus isolates was performed based on PCR amplification of the aroA gene, which encodes the enzyme 5-enolpyr...

Attaining highly secure and safe operation of the grid with acceptable voltage levels has become a difficult issue for electricity companies that must adopt remedial actions. The usage PV solar farm inverter as static synchronous compensator (or PVSTATCOM device) throughout night recently been proposed way to enhance system performance. In this article, novel artificial rabbits’ optimization al...