期刊
CHEMISTRY OF MATERIALS
卷 20, 期 12, 页码 3809-3813出版社
AMER CHEMICAL SOC
DOI: 10.1021/cm703674d
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The Au-doped magnetic silica nanotube (Au-MSNT) was fabricated by sol-gel transcription and its binding ability for proteins was carried out by TEM, FT-IR, and confocal microscope. The nickel nanoparticles with 3.5 +/- 1.0 nm are homogeneously deposited on the inner side of a silica nanotube (SNT) with 220 nm diameter. In addition, the Au-MSNT clearly revealed the An nanoparticles with 9.3 +/- 2.0 nm diameter. The Au-MSNT carried out the binding ability for protein as a guest molecule. The Au-MSNT acted as a receptor for the selective molecular recognition of biomolecules, particularly proteins containing cysteine. On the other hand, ubiquitin, which has no cysteine groups, was not immobilized onto the Au-MSNT. These results indicate that the Au-MSNT is efficiently recognized by the cysteine-containing protein.
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