Enhancement of single-molecule fluorescence signals by colloidal silver nanoparticles in studies of protein translation.

Enhancement of single-molecule fluorescence signals by colloidal silver nanoparticles in studies of protein translation.
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DOI:
10.1021/nn101839t
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发表时间:
2011-01-25
期刊:
影响因子:
17.1
通讯作者:
Goldman YE
Goldman YE
中科院分区:
材料科学1区
文献类型:
--
作者:
Bharill S;Chen C;Stevens B;Kaur J;Smilansky Z;Mandecki W;Gryczynski I;Gryczynski Z;Cooperman BS;Goldman YE

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Metal enhanced fluorescence (MEF) increased total photon emission of Cy3- and Cy5-labeled ribosomal initiation complexes near 50 nm silver particles 4- and 5.5-fold respectively. Fluorescence intensity fluctuations above shot noise, at 0.1 – 5 Hz, were greater on silver particles. Overall signal to noise ratio was similar or slightly improved near the particles. Proximity to silver particles did not compromise ribosome function, as measured by codon-dependent binding of fluorescent tRNA, dynamics of fluorescence resonance energy transfer between adjacent tRNAs in the ribosome, and tRNA translocation induced by elongation factor G.
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