Dr. Sergey A. Kozin, Ph.D & D.Sc, is a chief researcher in the Laboratory of conformational polymorphism of proteins in health and disease at the Engelhardt Institute of molecular biology, Russian academy of sciences (Moscow, Russia), where he has worked since 2011. He obtained his engineer degree in Chemistry and technology of high-energy nitrogen compounds from the Institute of Technology (St.Petersburg, Russia) in 1988. He worked as an engineer at the Research institute for polymeric materials (Perm, Russia) during 1988-1991. He received a Ph.D. in Biochemistry in 1995 at the Institute of Biomedical Chemistry (Moscow, Russia). He was a Researcher at the Institute of Physico-Chemical Biology (Paris, France) in 1996 and 1998-2001, and a postdoc at Brandeis University (Waltham, MA, USA) in 1997. He was an invited Associate professor at the Muséum National d'Histoire Naturelle (Paris, France) in 2001–2004 and a senior scientist at the Institute of Biomedical Chemistry (Moscow, Russia) in 2004–2011. He received a D.Sc. degree in Molecular biology with the thesis “Molecular mechanisms of interactions between amyloid-beta and zinc ions in health and in Alzheimer's disease" in 2022 at the Engelhardt Institute of molecular biology. His research interests include the mechanisms of abnormal protein aggregation in proteopathies, molecular determinants of the protein structure and function, and rational design of the engineered peptides for medicinal application.