期刊
JOURNAL OF BIOMOLECULAR STRUCTURE & DYNAMICS
卷 -, 期 -, 页码 -出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/07391102.2021.1950568
关键词
Thyroid hormone receptor-beta; MM/GBSA calculations; halogen bond interactions; ONIOM method; molecular dynamics simulation; molecular docking; bond dissociation enthalpy
资金
- University of Sistan and Baluchestan
This study investigated the binding affinity and antioxidant activity of natural and synthetic halogenated bisphenols on thyroid hormone receptor-beta. Results showed that selected compounds exhibited desirable potency in binding to THR-beta and the position and number of OH groups played a crucial role in affecting the activity.
Natural halogenated phenolic compounds are unique bioactive structures which share features and physicochemical properties with thyroid hormones, who are essential regulators of neurological development and metabolism processes. Also, these structures can be used as natural antioxidants to minimize the diseases related to oxidative stress. In this work, the binding affinity of 32 natural and synthetic halogenated bisphenols were investigated on thyroid hormone receptor-beta (THR-beta) using the molecular docking, MM/GBSA, molecular dynamics, and a rigorous three-layer ONIOM ((M06-2X/6-31G*:PM6:AMBER) calculation. The desirable potency is observed for binding of selected compounds to THR-beta. The Met313, Asn331, and His435 are the main interacting residues in the binding cavity which involved in the hydrogen and halogen bond interactions with the ligands. The most potent candidate on binding to the active site of THR-beta is presented with respect to the results of mentioned calculations. Moreover, the antioxidant activity of compounds has been investigated using the quantum mechanical calculations. The electrostatic potential surfaces illustrate well the antioxidant capacity of compounds. The halogen substituents increase the antioxidant activity of the most stable conformers. The position and number of OH groups are crucial factors which affect the activity, whereas two adjacent hydroxyl groups enhance the antioxidant activity of selected compounds. Communicated by Ramaswamy H. Sarma
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