Volume 20, Issue 5 e202201220
Research Article

Structure-Activity Relationship of Methyl 4-Aminobenzoate Derivatives as Being Drug Candidate Targeting Glutathione Related Enzymes: in Vitro and in Silico Approaches

Işıl Nihan Korkmaz

Işıl Nihan Korkmaz

Department of Chemistry, Faculty of Science, Atatürk University, Erzurum, 25240 Türkiye

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Uğur Güller

Corresponding Author

Uğur Güller

Department of Food Engineering, Faculty of Engineering, Iğdır University, Iğdır, 76100, Türkiye

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Ramazan Kalın

Ramazan Kalın

Department of Basic Science, Faculty of Science, Erzurum Technical University, Erzurum, 25700 Türkiye

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Hasan Özdemir

Hasan Özdemir

Department of Chemistry, Faculty of Science, Atatürk University, Erzurum, 25240 Türkiye

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Ömer İrfan Küfrevioğlu

Ömer İrfan Küfrevioğlu

Department of Chemistry, Faculty of Science, Atatürk University, Erzurum, 25240 Türkiye

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First published: 12 April 2023
Citations: 3

Abstract

A thiol compound, glutathione, is essential for healthy cell defence against xenobiotics and oxidative stress. Glutathione reductase (GR) and glutathione S-transferase (GST) are two glutathione-related enzymes that function in the antioxidant and the detoxification systems. In this study, potential inhibitory effects of methyl 4-aminobenzoate derivatives on GR and GST were examined in vitro. GR and GST were isolated from human erythrocytes with 7.63 EU/mg protein and 5.66 EU/mg protein specific activity, respectively. It was found that compound 1 (methyl 4-amino-3-bromo-5-fluorobenzoate with Ki value of 0.325±0.012 μM) and compound 5 (methyl 4-amino-2-nitrobenzoate with Ki value of 92.41±22.26 μM) inhibited GR and GST stronger than other derivatives. Furthermore, a computer-aided method was used to predict the binding affinities of derivatives, ADME characteristics, and toxicities. Derivatives 4 (methyl 4-amino-2-bromobenzoate) and 6 (methyl 4-amino-2-chlorobenzoate) were estimated to have the lowest binding energies into GR and GST receptors, respectively according to results of in silico studies.

Graphical Abstract

Conflict of interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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