Hans-Petter Hersleth is a Senior Lecturer and group leader at the University of Oslo's Department of Biosciences, Section for Biochemistry and Molecular Biology. He leads the Structural Redox Enzymology (ROX) group, which focuses on understanding the structure and function of redox enzyme systems through protein crystallography, enzyme kinetics, binding studies, and spectroscopy. Dr. Hersleth earned his Cand. mag. in Mathematics, Physics and Chemistry from the University of Oslo (1995-1998), followed by a Cand. scient. in Physical Chemistry (Crystallography) (1998-2000), and completed his Dr. scient. (PhD) in Protein Crystallography (2000-2007) at the University of Oslo's Department of Chemistry. His research interests span structural biology, protein structure and function, enzymology, protein crystallography, and spectroscopy. The ROX group investigates redox enzymes that use various cofactors including heme, flavins, and thiol-based systems. Specific research areas include low molecular weight thiols in bacterial defense mechanisms, ribonucleotide reductase systems, and flavin-based oxidoreductases. The group employs a multidisciplinary approach combining X-ray and neutron crystallography with various spectroscopic techniques to understand these enzymes at molecular and electronic levels. His recent publications demonstrate expertise in structural characterization of redox enzymes, particularly focusing on bacterial systems like Bacillus cereus. The research shows strong trends in protein crystallography of flavin-dependent enzymes, thiol-based redox systems, and bacterial defense mechanisms against oxidative stress. "Den Gyldne Laserpeker" as best lecturer (2020) "Den Gyldne Laserpeker" as best lecturer (2015) Norsk Hydros pris for fremragende studieresultater i kjemi (1999) Dr. Hersleth has supervised numerous Master's and PhD students, including Ingvild Gudim, Inger K. Olsbu, Marta Hammerstad, and Marie Lofstad. His group receives funding for research on bacterial redox defense systems and metal homeostasis, with potential applications in antimicrobial target discovery. The ROX group is also part of the UiO Structural Biology Core Facilities, providing expertise in structural biology to the broader research community. The Structural Redox Enzymology group operates as a dynamic research team investigating fundamental biochemical processes with implications for understanding bacterial pathogenesis and developing new antimicrobial strategies. The group collaborates extensively both nationally and internationally, with members including Marta Hammerstad, Niels Højmark Andersen, Marthe Sofie Lindahl Karlsen, and Matias Aracena-Solem.