An embryo of protocells: The capsule of graphene with selective ion channels
- Chinese Academy of Sciences, Lanzhou (People's Republic of China)
- Lanzhou Institute of Husbandry and Pharmaceutical Sciences of CAAS, Lanzhou (People's Republic of China)
- Lanzhou Univ., Lanzhou (People's Republic of China)
- Fudan Univ., Shanghai (People's Republic of China); Lanzhou Univ., Lanzhou (People's Republic of China)
- Brookhaven National Lab. (BNL), Upton, NY (United States)
In this study, the synthesis of artificial cell is a route for searching the origin of protocell. Here, we create a novel cell model of graphene capsules with selective ion channels, indicating that graphene might be an embryo of protocell membrane. Firstly, we found that the highly oxidized graphene and phospholipid-graphene oxide composite would curl into capsules under a strongly acidic saturated solution of heavy metallic salt solution at low temperature. Secondly, L-amino acids exhibited higher reactivity than D-amino acids on graphene oxides to form peptides, and the formed peptides in the influence of graphene would be transformed into a secondary structure, promoting the formation of left-handed proteins. Lastly, monolayer nanoporous graphene, prepared by unfocused 84Kr25+, has a high selectivity for permeation of the monovalent metal ions ( Rb+ > K+ > Cs+ > Na+ > Li+, based on permeation concentration), but does not allow Cl- go through. It is similar to K+ channels, which would cause an influx of K+ into capsule of graphene with the increase of pH in the primitive ocean, creating a suitable inner condition for the origin of life. Therefore, we built a model cell of graphene, which would provide a route for reproducing the origin of life.
- Research Organization:
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 1258787
- Journal Information:
- Scientific Reports, Vol. 5; ISSN 2045-2322
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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journal | February 2017 |
Diverse Nanoassemblies of Graphene Quantum Dots and Their Mineralogical Counterparts
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journal | October 2019 |
Diverse Nanoassemblies of Graphene Quantum Dots and Their Mineralogical Counterparts
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journal | October 2019 |
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