Functional Interactomics

We develop technology to map protein interaction networks, protein complexes, and their posttranslational regulation. These tools are applied to better understand carbon and nitrogen signaling in relation to plant growth, stress resilience and crop yield, with the aim to adapt to or mitigate climate change.

Research areas

Plant biology Systems biology

Model organisms

Research Focus

Geert De Jaeger leads the Functional Interactomics Group.
The field of functional interactomics aims to map system-wide molecular interactions and analyze their function. This is of pivotal importance, as biological structures and functions are generally accomplished by networks of short- and long-term molecular interactions.      
 As a technology-driven team, our research focuses on the continuous development and optimization of interactomics tools for plant research, more specifically for the discovery of protein-protein interactions and interactions between proteins and nucleic acids. At the core of our technology lies affinity purification coupled to mass spectrometry (AP-MS). The advantage of this approach is that interactions are mapped in situ, enabling proteome-wide investigation of interactions that occur inside plant cells.

We implement these interactomics tools to gain insight on the nutrient signaling network of carbon and nitrogen and how it relates to plant growth and yield. . Many important signaling pathways impinge on the growth and proliferation of cells in plants. However, signaling pathways involving key growth regulators such as nutrients remain to a large extent elusive in plants. To broaden our knowledge in these nutrient signaling pathways, we are studying protein complexes comprising the antagonistic target of rapamycin (TOR) and SNF1-related (SnRK1) kinases, two master regulators that integrate nutrient signaling with plant growth.


To showcase the world-class scientific research of the Geert De Jaeger Lab, you can discover their scientific papers in more detail.


We are always on the lookout for highly motivated colleagues to join our team. If you are interested, please contact us.


The Geert De Jaeger Lab can only thrive thanks to the dedication and commitment of its people, no matter what their function or seniority.


To stay up to date in rapidly developing fields, scientists regularly interact with (international) colleagues. Conferences and other (scientific) events are an excellent way to facilitate such a continent-spanning knowledge exchange.