Rising Star: Exploring Weak Biomolecular Interactions: My Steady and Evolving Journey
1State Key Laboratory of Membrane Biology & Frontier Research Center for Biological Structure, School of Life Sciences, Tsinghua University, Tsinghua-Peking Center for Life Sciences, Beijing 100084, China.
Journal of Molecular Biology
|February 8, 2026
Summary
Weak biomolecular interactions are central to cellular complexity. Research revealed their role in protein activation and driving liquid-liquid phase separation for cellular organization.
Area of Science:
- Biochemistry
- Cell Biology
- Molecular Biology
Background:
- Weak intramolecular interactions regulate protein activation, impacting cellular signal transduction.
- The Nck/NWASP complex research unexpectedly revealed that weak, multivalent interactions drive liquid-liquid phase separation (LLPS).
- LLPS is a critical process for cellular organization and dynamics.
Purpose of the Study:
- To investigate the role of weak biomolecular interactions in cellular processes.
- To understand how weak interactions regulate protein activation and cellular organization.
- To develop tools for detecting weak interactions in living cells.
Main Methods:
- Studied the guanine nucleotide exchange factor Vav1 to understand intramolecular interactions.
- Investigated the Nck/NWASP complex, leading to the discovery of weak interactions driving LLPS.
- Developed the CoPIC platform for high-throughput detection of weak interactions within cells.
Main Results:
- Weak intramolecular interactions were found to regulate protein activation and signal transduction.
- Weak, multivalent interactions were identified as drivers of liquid-liquid phase separation (LLPS).
- The CoPIC platform was successfully developed for detecting weak interactions in living cells.
Conclusions:
- Weak biomolecular interactions are fundamental architects of cellular complexity and adaptability.
- Both protein activation and LLPS highlight the critical regulatory role of weak interactions in cellular dynamics.
- Pursuing mechanistic questions can reveal broader biological principles, emphasizing the centrality of weak interactions.
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