Superchiral Plasmonic Phase Sensitivity for Fingerprinting of Protein Interface Structure.
Superchiral Plasmonic Phase Sensitivity for Fingerprinting of Protein Interface Structure.
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DOI:
10.1021/acsnano.7b04698
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发表时间:
2017-12-26
期刊:
影响因子:
17.1
通讯作者:
Kadodwala M
中科院分区:
文献类型:
--
作者:
Tullius R;Platt GW;Khosravi Khorashad L;Gadegaard N;Lapthorn AJ;Rotello VM;Cooke G;Barron LD;Govorov AO;Karimullah AS;Kadodwala M
The structure adopted by biomaterials, such as proteins, at interfaces is crucial parameter in a range of important biological problems. It is a critical property in defining the functionality of cell / bacterial membranes, biofilms (which are implicated in antibiotic resistant infections) and the exploitation of immobilised enzymes in biocatalysis. The intrinsically small quantities of materials at interfaces precludes the application of conventional spectroscopic phenomena routinely used for (bio)structural analysis due to a lack of sensitivity. Here we show that the interaction of protein with superchiral fields induces asymmetric changes in retardation phase effects of excited bright and dark modes of a chiral plasmonic structure, that are correlated to the interfacial structure of the biomolecule. These superchiral interference effects enable the structure of the interface, composed of closely related protein fragments, to be rapidly detected and fingerprinted. Thus, we demonstrate a powerful new phenomenon for the bioanalytical toolbox.
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影响因子:
3.2
作者:
Mönkkönen, K;Hietala, J;Jääskeläinen, T
通讯作者:
Jääskeläinen, T
影响因子:
2.5
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影响因子:
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通讯作者:
Kadodwala, Malcolm
影响因子:
3.9
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Larsen, NB
影响因子:
2.9
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通讯作者:
Fan, Zhiyuan