Welcome to the Heldwein lab! We are structural biologists interested in various aspects of viral lifecycle. Our favorite viruses are herpesviruses because they are ancient, marvelously complex viruses that are also important human pathogens. In our work, we are guided by conviction that to fully understand the mechanism of any biological process, one must know the structures of participating macromolecules.
Our work intends to answer the following broad questions. How do herpesviruses enter cells to initiate infection? How do herpesviruses assemble and get out of the cells once they have replicated? These complex processes involve multiple proteins. To understand how these proteins work together to bring about viral entry or egress, we use a structural approach. Our main tool is x-ray crystallography, which allows us to determine 3D structures of the proteins of interest at the level of atoms. We also use other structural techniques such as NMR and EM, when necessary. The structures provide close-up views of the architecture of these proteins and often shed light on how proteins function. But structures do not necessarily nail down the answers to all lingering questions. More often, structures hold many surprises and, importantly, enable us to ask new, better-articulated questions regarding the mechanism. To answer these mechanistic questions, we use an amalgamation of structural, biochemical, biophysical, and cellular approaches.
Ekaterina Heldwein, Ph.D.
American Cancer Society (MA Division) Professor of Molecular Biology
Department of Molecular Biology and Microbiology
Director, PhD Program in Molecular Microbiology
Sackler School of Graduate Biomedical Sciences
Tufts University School of Medicine
136 Harrison Ave
Boston, MA 02111