Organized Arrangement of Calcium Carbonate Crystals, Directed by a Rationally Designed Protein
| Autor: | Zuhair A. Munir, Hao Wang, Jingjing Xie, Zhengyi Fu, Weimin Wang, Hang Ping, Hao Xie, Yamin Wan |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Calcium carbonate crystals
Fibroin Nanoparticle 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Mineralization (biology) 0104 chemical sciences chemistry.chemical_compound Chitin chemistry Chemical engineering Chitin binding Vaterite General Materials Science Calcium ion binding 0210 nano-technology |
| Zdroj: | Crystal Growth & Design. 18:3576-3583 |
| ISSN: | 1528-7505 1528-7483 |
| DOI: | 10.1021/acs.cgd.8b00365 |
| Popis: | The integration of a “brick and mortar” structure and superior fracture toughness of nacre has attracted intensive attention recently. Elucidating the interactions between biomacromolecules and inorganic phases is beneficial to understand the structure-forming process of nacre. Herein, a recombinant protein, ChiSifiCa, mimicking features of the organic matrix in nacre is rationally designed. This protein contains three functional domains, chitin binding (Chi), silk fibroin (Sifi), and calcium ion binding (Ca). The domain order in ChiSifiCa is in the same manner as the distribution of organic matrix in nacre. When ChiSifiCa binds to the surface of chitin, it provides a confined microenvironment facilitating CaCO3 mineralization. The formation of spherical vaterite minerals with a hollow structure was observed under the function of ChiSifiCa. These minerals are assembled by well-aligned nanoplatelets and nanoparticles, distributed in the outer and inner region of the sphere, respectively. The nanoparticles ... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|