Abstract:
: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 (84)Kr(25+), 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.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Li Z,Wang C,Tian L,Bai J,Yao H,Zhao Y,Zhang X,Cao S,Qi W,Wang S,Shi K,Xu Y,Mingliang Z,Liu B,Qiu H,Liu J,Wu W,Wang X,Wenzhen Adoi
10.1038/srep10258subject
Has Abstractpub_date
2015-05-19 00:00:00pages
10258issn
2045-2322pii
srep10258journal_volume
5pub_type
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