Prof. Dr. José Carlos Toledo Junior is a professor at the University of São Paulo, Department of Chemistry (FFCLRP-USP). He is a chemist and has a master's and doctorate in inorganic chemistry, both from the University of São Paulo. He completed a post-doctoral internship in biochemistry at the Center For Free Radicals at the University of Alabama at Birmingham (USA) (2004-2007) and at the Institute of Chemistry at the University of São Paulo (2007-2008). He is interested in research in the areas of biological inorganic chemistry involving labile iron pool and metalo proteina and enzymes, and biological chemistry and biochemistry of nitric oxide and reactive species.