Dr. Ollagnier was born in 1971 in French Alps. She received her Ph.D. degree from the University Joseph Fourier in 1998 under the supervision of Prof. M. Fontecave and Dr E. Mulliez. Her doctoral work dealt with a metalloenzyme involved in radical chemistry. Subsequently, she spent one year as a postdoctoral fellow at the University of Karlsruhe with Prof. R. Jétey on a plant radical enzyme, and then a second one with Prof. M. Fontecave at the CEA of Grenoble dedicated to radical enzymes involved in sulfur insertion. She then joined in 2001 the group of Prof. M. Fontecave in Grenoble where she obtained a position as a CNRS researcher. Her current research focuses on the biosynthesis and reactivity of metallic centers such as iron sulfur clusters. This work could potentially have some application on human health.