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Updated: Oct 28, 2025
A Nanobar-Supported Lipid Bilayer System for the Study of Membrane Curvature Sensing Proteins in vitro
Published on: November 30, 2022
A multiplexed phospholipid membrane platform for curvature sensitive protein screening
Eider Berganza1, Mirsana P Ebrahimkutty, Srivatsan K Vasantham
1Institute of Nanotechnology (INT) & Karlsruhe Nano Micro Facility (KNMF), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany. eider.berganza.eguiarte@gmail.com.
We developed a simple, low-cost platform using scanning probe lithography (SPL) to screen proteins that sense membrane curvature. This method allows for multiplexed lipid bilayer patches on substrates with controlled nanoscale curvature, aiding in studying protein-membrane interactions.
Area of Science:
- Biophysics
- Materials Science
- Cell Biology
Background:
- Membrane curvature is crucial for biological processes like membrane trafficking and host-virus interactions.
- In vitro studies of nanoscale membrane curvature are hindered by complex nanofabrication.
Purpose of the Study:
- To develop a simple, low-cost platform for screening curvature-sensitive proteins.
- To create biomimetic lipid bilayer patches with controlled nanoscale curvature.
Main Methods:
- Utilized scanning probe lithography (SPL) to create lipid bilayer patches.
- Imposed local membrane curvature by anchoring nanoparticles of specific sizes to the substrate.
- Multiplexed lipid patches of varying compositions onto substrates with tailored curvature.
Main Results:
- Demonstrated selective binding of a positive curvature-sensitive protein (Nadrin2 BAR domain) to patterned lipid patches.
- Successfully created a platform with controlled lipid composition and membrane curvature.
Conclusions:
- The developed platform offers a flexible and easy-to-prepare method for screening curvature-dependent protein-membrane interactions.
- This approach facilitates in vitro studies of biomimetic models with controlled nanoscale curvature.
