Single enzyme nanoparticles armored by a thin silicate network: Single enzyme caged nanoparticles

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For the encapsulation of biomolecules in inorganic materials, we have developed a unique enzyme silicate conjugate material that consists of a self-assembled molecularly thin silicate layer on the surface of each individual enzyme molecule. The enzyme-silicate conjugate materials, called single enzyme caged nanoparticles (SECNs), were synthesized via the silica polymerization on the surface of enzyme molecule after solubilizing each enzyme molecule in hexane by using a tiny amount of surfactant, called "ion-pairing". SECNs possess near native enzyme activity in aqueous media with minimal substrate diffusional limitations, and are highly stable under the protection of silicate network cage. Due to their nearly molecular size, SECNs can also be adsorbed into mesoporous silica materials to yield robust and easily-recyclable enzymatic systems that can be used in a number of potential biocatalytic applications such as diagnostics, biosensors, biotransformations, biofuel production, bioremediation and CO2 capture. (C) 2017 Elsevier B.V. All rights reserved.
Publisher
ELSEVIER SCIENCE SA
Issue Date
2017-08
Language
English
Article Type
Article
Keywords

ALPHA-CHYMOTRYPSIN; MESOPOROUS SILICA; MECHANISM; PROTEIN; IMMOBILIZATION

Citation

CHEMICAL ENGINEERING JOURNAL, v.322, pp.510 - 515

ISSN
1385-8947
DOI
10.1016/j.cej.2017.04.022
URI
http://hdl.handle.net/10203/224023
Appears in Collection
CBE-Journal Papers(저널논문)
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