Typical organic pollutant-protein interactions studies through spectroscopy, molecular docking and crystallography: A review

With the development of industry and human society, more attention was paid for the toxic effects of organic pollutants that are closely related to human daily life. Previous studies mainly focused on the dose-response relationship and cytotoxic effects of pollutants to organisms, while little research focused on pollutant-protein interactions at molecular level. However, the binding of organic pollutants to biomolecules, especially proteins like transporters, membrane receptor and nuclear receptors, is often the first step of toxic effects. It can make a series of endocrine disrupting and genotoxic effects through cell signaling pathway by binding specific target proteins including scrum albumin, thyroid transporter, estrogen receptor, androgen receptor, and aryl hydrocarbon receptor. Thus, the research of interactions between organic pollutants and proteins is helpful and necessary to understand the distribution, metabolism and toxicity mechanism of compounds in organisms at the molecular level. This paper reviewed the latest research progress of the interaction types of persistent organic pollutants (POPS), emerging pollutants and some other pollutants with targeted proteins. In addition, we summarized several main experimental techniques for studying pollutant-protein interactions including ultraviolet;'visible absorption spectrometry (UV-vis), fluorescence, infrared spectrometry, circular clichroic spectra (CD), molecular docking and X-ray crystallography. This review contributes to the molecular mechanism of the interaction between organic pollutants and biomolecules. (C) 2020 Elsevier B.V. All rights reserved.

Automated summary

The interaction between organic pollutants and proteins is crucial in understanding the distribution, metabolism, and toxicity mechanisms of compounds in organisms. Binding of organic pollutants to specific target proteins can lead to a series of endocrine disrupting and genotoxic effects. Experimental techniques such as UV-vis, fluorescence, infrared spectrometry, CD, molecular docking, and X-ray crystallography are commonly used to study pollutant-protein interactions.