Dynamic spatial and structural organization in artificial cells regulates signal processing by protein scaffolding

Area of Science:

• Biomimetic chemistry
• Synthetic biology
• Cellular organization

Background:

• Biological systems rely on dynamic structural and spatial organization for biochemical regulation.
• Transient organization, driven by external cues, is crucial for self-assembly processes.
• Synthetic cells require hierarchical and reversible component organization for dynamic signaling regulation.

Purpose of the Study:

• To achieve dynamic spatial organization of effector protein subunits in synthetic biomimetic compartments.
• To enable reversible self-assembly and signaling activation within artificial cells.
• To explore transient molecular programs in complex synthetic cell platforms.

Main Methods:

• Utilized giant unilamellar vesicles (GUVs) as synthetic biomimetic compartments.
• Reversibly associated two fragments of a split luciferase to the GUV membrane.
• Induced structural dimerization of protein fragments to activate enzymatic signaling.

Main Results:

• Successfully demonstrated dynamic spatial organization of effector protein subunits within GUVs.
• Achieved reversible self-assembly and activation of enzymatic signaling.
• Showcased autonomous regulation of molecular organization and signaling processes.

Conclusions:

• Developed a method for dynamic spatial organization and signaling in synthetic cells.
• This platform allows for continuous spatiotemporal control over supramolecular organization.
• Opens new avenues for designing artificial cells with programmable functions.