Journal
JOURNAL OF MOLECULAR LIQUIDS
Volume 384, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.molliq.2023.122267
Keywords
Plumbagin; Microtubule affinity regulating kinase 4; MARK4 inhibitors; Molecular dynamics simulation; Drug discovery
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MARK4 is associated with the progression of various life-threatening conditions. In this study, the natural compound PBG was evaluated as an inhibitor of MARK4. Computational and spectroscopic methods were used to assess its binding affinity and inhibitory potential, showing promising results.
Microtubule affinity regulating kinase 4 (MARK4) is associated with the progression of neurodegeneration, cancer, cardiovascular diseases, obesity and other life-threatening conditions. MARK4 is an attractive therapeutic target; however, inhibitors against the kinase are sparse. Natural compounds are a part of our dietary routine and have been used as medicines for ages with the most negligible side effects. In this study, we have selected the naphthoquinone derivative, Plumbagin (PBG). The naturally occurring naphthoquinone has been studied for its inhibitory action against MARK4 and its binding mechanism to the protein. Binding studies employing computational and spectroscopic methods have been used to assess the binding of the compound with MARK4. Critical residues of the protein showed involvement in the binding process, and the protein-ligand binding affinity was estimated to be 106. The inhibitory potential of PBG against MARK4 was also evaluated, with an IC50 value of 5.2 & mu;M. All-atom molecular dynamics (MD) simulation study also showed a stable protein-ligand complex formation, stabilized in the trajectories, and very few conformational changes were observed.
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