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Updated: Jul 7, 2025
09:34
Synthesis of Information-bearing Peptoids and their Sequence-directed Dynamic Covalent Self-assembly
Published on: February 6, 2020
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Selective amide bond formation in redox-active coacervate protocells.
Jiahua Wang1,2, Manzar Abbas1, Junyou Wang3
1Institute for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ, Nijmegen, the Netherlands.
Nature Communications
|December 21, 2023
Summary
Researchers created redox-active coacervate protocells using ferricyanide and peptides. These protocells can synthesize peptides from amino acids, mimicking early life chemistry and controlling network formation.
Area of Science:
- Origin of life studies
- Protocell research
- Biochemistry
Background:
- Coacervate droplets are studied as protocell models due to molecular sequestration and catalytic potential.
- The synthesis of essential biomolecules like peptides within protocells from simple precursors is not well understood.
Purpose of the Study:
- To develop a redox-active protocell model for synthesizing life's building blocks.
- To investigate the role of redox chemistry in driving prebiotic reactions within coacervates.
- To explore the spatial control of molecular assembly in primitive cell-like compartments.
Main Methods:
- Formation of coacervate droplets via phase separation of ferricyanide and cationic peptides.
- Utilizing the oxidizing potential of ferricyanide within coacervates to drive amide bond formation.
- Investigating aminoacylation reactions with prebiotically relevant amino acids and α-amidothioacids.
- Controlling the assembly of fibrous networks using ferricyanide-containing coacervates.
Main Results:
- Redox-active coacervates were successfully formed and regulated by redox chemistry.
- Ferricyanide within coacervates acted as an oxidizing hub for sequestered metabolites.
- Amide bond formation between amino acids and α-amidothioacids was driven by the coacervates' oxidizing potential.
- Aminoacylation was enhanced and selective for specific amino acids.
- Spatial control over fibrous network assembly within and on coacervate protocells was achieved.
Conclusions:
- The developed ferricyanide/peptide coacervates serve as a viable protocell model capable of synthesizing peptides.
- This work demonstrates the integration of redox chemistry within primitive cell-like compartments for prebiotic synthesis.
- The findings represent a significant advancement in understanding how life's building blocks could form in early Earth conditions.
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