Fabrication of silica on chitin in ambient conditions using silicatein fused with a chitin-binding domain
Fabrication of silica on chitin in ambient conditions using silicatein fused with a chitin-binding domain
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在环境条件下使用与几丁质结合域融合的硅酸盐在几丁质上制造二氧化硅
DOI:
10.1007/s00449-021-02568-w
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发表时间:
2021
影响因子:
3.8
通讯作者:
Kawasaki Satoru
中科院分区:
文献类型:
--
作者:
Godigamuwa Kasun;Nakashima Kazunori;Tsujitani Sota;Kawasaki Satoru
High temperatures, harsh pH conditions, and toxic chemicals involved in the conventional synthesis and coating of silica limit the fabrication of new-generation hybrid materials immobilizing live cells and biomolecules such as enzymes and drugs. This hinders the application of inorganic–organic biohybrid materials in various fields, including bioelectronics, energy generation, and biomedicine. Silicatein, an enzyme found in siliceous sponges, catalyzes the polymerization of silica under mild conditions, that is, at room temperature and neutral pH. Silicatein was fused with a chitin-binding domain (ChBD) to selectively bind the fusion silicatein on the chitin material and with a small soluble tag called InakC, a hydrophilic protein fromPseudomonas syringae,to control the unfavorable aggregation of silicatein. The fusion silicatein was soluble in aqueous media and was successfully found to be adsorbed on the chitin material. The immobilized fusion silicatein acted as an interfacial catalyst to fabricate silica on chitin under ambient conditions. This technique can be used to fabricate inorganic–organic hybrid materials to immobilize biomolecules and can be applied to develop novel biocatalytic systems, biosensors, and tissue culture scaffolds.
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