Catalytic processing in ruthenium-based polyoxometalate coacervate protocells.

Area of Science:

• Systems chemistry
• Soft matter bioengineering
• Synthetic protobiology

Background:

• Programmable microscale materials with cell-like functions are crucial for advancing systems chemistry and synthetic biology.
• Developing artificial systems that mimic cellular behaviors is a key challenge in protocell research.

Purpose of the Study:

• To reconfigure polymer/nucleotide coacervate micro-droplets into membrane-bounded polyoxometalate coacervate vesicles (PCVs).
• To create synzyme protocells (Ru4PCVs) with catalase-like activity using a bio-inspired catalyst.
• To implement multi-compartmentalized cell-like models for collective behaviors and chemical signaling.

Main Methods:

• Utilized polymer/nucleotide coacervate micro-droplets as precursors.
• Employed a bio-inspired Ru-based polyoxometalate catalyst for vesicle formation and catalytic activity.
• Integrated horseradish peroxidase within Ru4PCVs for parallel catalytic processing.

Main Results:

• Successfully synthesized Ru4PCVs exhibiting catalase-like activity.
• Demonstrated collective synzyme-mediated buoyancy in multi-compartmentalized models.
• Showcased parallel catalytic processing and chemical signaling in protocell communities.

Conclusions:

• Developed a novel type of catalytic micro-compartment with multi-functional capabilities.
• The synthetic protocells represent a significant step towards creating complex protocell reaction networks.
• Highlights the potential of polyoxometalate coacervate vesicles in synthetic biology and materials science.