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Selective Labeling and Decoration of the Ends and Sidewalls of Single-Walled Carbon Nanotubes Using Mono- and Bispecific Solid-Binding Fluorescent Proteins

机译:使用单壁和双特异性结合荧光蛋白选择性标记和装饰单壁碳纳米管的末端和侧壁

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摘要

Simple and robust strategies for the non covalent functionalization of carbon nanostructures with proteins are of considerable interest in hybrid nanomaterials synthesis, part-to-part assembly, and biosensor development. Here, we show that fusion of the Car9 and Car15 carbon binding peptides to the C-termini of the sfGFP and mCherry fluorescent proteins enables selective labeling of the ends or the sidewalls of single walled carbon nanotubes. By installing a gold-binding peptide or a single cysteine residue in carbon-binding variants of sfGFP, we further produce heterobifunctional solid-binding proteins that support the decoration of nanotubes sidewalls or termini with gold nanoparticles. The approach described here is generic and should prove useful for the controlled assembly of other hybrid materials.
机译:具有蛋白质的碳纳米结构的非共价官能化的简单且鲁棒策略对杂化纳米材料合成,部分组装和生物传感器发育具有相当大的兴趣。 在这里,我们表明CAR9和CAR15碳结合肽的融合到SFGFP和MCHERRY荧光蛋白的C-末端能够选择性标记单壁碳纳米管的端部或侧壁。 通过在SFGFP的碳结合变体中安装金结合肽或单一半胱氨酸残基,我们进一步产生了异双官能结合蛋白,其支持纳米管侧壁或末端用金纳米颗粒的装饰。 这里描述的方法是通用的,并且应该证明对其他混合材料的控制组件有用。

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