**About the Editors**

**Silke Leimk ¨uhler** obtained a Ph.D in microbiology from the Ruhr-University of Bochum, Germany, in 1998. After a post-doctoral position in the Department of Biochemistry at the Duke University Medical Center (Durham, NC, USA) from 1999 to 2001, she returned to Germany with an Emmy-Noether grant from the DFG to establish her own research group at the Technical University of Braunschweig, where she stayed until 2004. In 2005, she accepted a Junior Professor position at the University of Potsdam, Germany. Since 2009, she has had a full professor position in Molecular Enzymology at the University of Potsdam, Germany. Her major research interests focus on molybdenum cofactor biosynthesis, molybdoenzyme enzymology, cellular sulfur transfer mechanisms for sulfur-containing biomolecule synthesis and the role of Fe-S cluster assembly on molybdoenzyme maturation.

**Axel Magalon** obtained his Ph.D in Microbiology at Aix-Marseille University in 1997. After a two-year position in the Department of Microbiology at the Ludwig-Maximilians-Universitat¨ (Munich, Germany) as an Alexander von Humboldt postdoctoral fellow, he obtained a permanent position as a CNRS research scientist at the Laboratoire de Chimie Bacterienne (Marseille, France) ´ in 2001. Since 2008, as research director, he has headed a group in this laboratory. His research focusses on the molecular and cell biology of respiration in enterobacteriaceae, with an emphasis on molybdoenzymes ranging from maturation to functionality and cellular organization questioning.

**Oliver Einsle** is the director of the Insitute for Biochemistry and dean of the faculty of Chemistry and Pharmacy at the University of Freiburg, Germany. He studied Biology at the University of Konstanz, Germany, and received a doctorate in Biochemistry and Biophysics from the same university in 2000, for a thesis work conducted at the Max Planck Institute for Biochemistry in Martinsried, Germany. During a post-doctoral fellowship as a Howard Hughes fellow at the California Institute of Technology in Pasadena, USA, he was appointed a Junior Professor for Protein Crystallography at the University of Gottingen in 2002 and full professor of Biochemistry in Freiburg ¨ in 2008. His research focuses on the structure and function of complex metalloenzymes, particularly in Biological Nitrogen Fixation. He is a member of the American Chemical Society (ACS), the Society of Biological Chemistry (SBIC) and the German National Academy of Sciences Leopoldina.

**Carola Schulzke** has been the Chair of Bioinorganic Chemistry at the University of Greifswald since 2012. She obtained her Dr. rer. nat. at the University of Hamburg in 2000. After post-doctoral positions in Ottawa Canada and Kiel, Germany, she became junior professor at the Georg-August-University in Gottingen, followed by an Assistant Professorship at Trinity College Dublin. ¨ Her research focusses on the synthesis of molybdenum and tungsten cofactor models and biologically active sulfur-rich compounds, synthetic and spectroscopic coordination chemistry, single crystal X-ray structural analysis and catalysis. She is a fellow of the Royal Society of Chemistry (RSC), the German Chemical Society (GDCh) and the Society of Biological Inorganic Chemistry (SBIC).
