Dr Lianne Willems

Email: lianne.willems@york.ac.uk

Chemical Biology of Carbohydrates and Carbohydrate-Processing Enzymes

Carbohydrates play key roles in a wide variety of cellular processes. When attached to proteins, they can, for example, regulate protein stability and mediate cell-cell and cell-pathogen interactions. These glycoconjugates are often extended into complex, branched carbohydrate structures. The exact structures of the various glycoconjugates are determined by the enzymes that are responsible for building up, remodeling and breaking down carbohydrate chains. Defects in several of these enzymes, as well as in the glycoconjugates themselves, have been found to be at the basis of various human diseases.

My research is focused on the development of chemical tools to study fundamental processes in glycobiology. By using a multidisciplinary approach, spanning the disciplines of organic chemistry, biochemistry, cell and molecular biology, we can study the cellular roles of carbohydrates and carbohydrate-processing enzymes. With this information, we aim to gain a better understanding of the molecular mechanisms behind their functioning, their impact on cellular physiology and how defects lead to human disease. Current interests include:

  • Development of chemical tools to study carbohydrate-processing enzymes and glycosylation in mammalian cells
  • Synthesis of glycoconjugates and carbohydrate analogues
  • Characterization of the O-glycosylated proteome
  • Use of the developed tools and techniques to study carbohydrate-processing enzymes and glycans in health and disease
  • The role of glycosylation in muscular dystrophy


Lianne Willems received her PhD from Leiden University, The Netherlands in 2014, working with Prof Overkleeft on the topic of developing novel strategies for activity-based profiling of glycosidases and proteases. She then went on to postdoctoral research at Simon Fraser University in Canada in the laboratory of Prof Vocadlo. For her research on bioorthogonal chemistry approaches for functional analysis of co-translational O-glycosylation, she received a Banting Postdoctoral Fellowship from the Natural Sciences and Engineering Research Council (NSERC) in Canada, as well as a Rubicon fellowship from the Netherlands Organisation of Scientific Research (NWO). She will take up her position as Lecturer at the University of York in June 2018.