A disordered tether to iLID improves photoswitchable protein patterning on model membranes

Area of Science:

• Biophysics
• Molecular Biology
• Biochemistry

Background:

• Reversible protein patterning on model membranes is crucial for mimicking in vitro spatiotemporal protein dynamics.
• Existing methods lack sufficient precision for dynamic biological processes.

Purpose of the Study:

• To develop an engineered protein system for precise and reversible membrane patterning.
• To enhance spatiotemporal control over protein recruitment and release on model membranes.

Main Methods:

• Engineering of an iLID variant (disiLID) with a disordered membrane-tethering domain.
• Utilizing blue light for protein recruitment and dark conditions for reversibility.
• Characterization of protein recruitment and patterning dynamics on model membranes.

Main Results:

• The engineered disiLID demonstrated improved Nano recruitment under blue light.
• Enhanced reversibility of protein patterning was observed in the dark.
• Achieved higher spatiotemporal precision in protein patterning on membranes.

Conclusions:

• Engineered disiLID provides a robust platform for reversible protein patterning on membranes.
• This system significantly improves spatiotemporal control for in vitro studies of protein dynamics.
• Offers potential for advanced applications in synthetic biology and biomaterials.