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Quantifying the binding between proteins and open chromatin-like DNA sequences with gold nanorods
Journal article   Open access   Peer reviewed

Quantifying the binding between proteins and open chromatin-like DNA sequences with gold nanorods

Roger M Pallares, Nguyen Thi Kim Thanh and Xiao Du Su
Chemical Communications, Vol.55(100), pp.15041-15044
2019
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https://doi.org/10.1039/C9CC07511AView
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Abstract

Chemical Sciences
The binding of transcription factors to DNA is one of the main mechanisms in gene regulation. While transcription factors frequently bind to unwrapped long DNA sequences known as open chromatin structures, most bioassays that study protein-DNA binding rely on short oligonucleotide probes. In this work, we develop a gold nanorod-based colorimetric assay for the binding of transcription factors to DNA in long open chromatin-like structures. After the determination of the binding affinity and stoichiometry, we explored the effect of the probe length on the assay performance and compared it to other established techniques.

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