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• W3179940237 endingPage "4147" @default.
• W3179940237 startingPage "4147" @default.
• W3179940237 abstract "The binding of heat stable enterotoxin (STa) secreted by enterotoxigenic Escherichia coli (ETEC) to the extracellular domain of guanylyl cyclase c (ECDGC-C) causes activation of a signaling cascade, which ultimately results in watery diarrhea. We carried out this study with the objective of finding ligands that would interfere with the binding of STa on ECDGC-C. With this view in mind, we tested the biological activity of a alkaloid rich fraction of Holarrhena pubescens against ETEC under in vitro conditions. Since this fraction showed significant antibacterial activity against ETEC, we decided to test the screen binding affinity of nine compounds of steroidal alkaloid type from Holarrhena pubescens against extracellular domain (ECD) by molecular docking and identified three compounds with significant binding energy. Molecular dynamics simulations were performed for all the three lead compounds to establish the stability of their interaction with the target protein. Pharmacokinetics and toxicity profiling of these leads demonstrated that they possessed good drug-like properties. Furthermore, the ability of these leads to inhibit the binding of STa to ECD was evaluated. This was first done by identifying amino acid residues of ECDGC-C binding to STa by protein–protein docking. The results were matched with our molecular docking results. We report here that holadysenterine, one of the lead compounds that showed a strong affinity for the amino acid residues on ECDGC-C, also binds to STa. This suggests that holadysenterine has the potential to inhibit binding of STa on ECD and can be considered for future study, involving its validation through in vitro assays and animal model studies." @default.
• W3179940237 created "2021-07-19" @default.
• W3179940237 creator A5006076631 @default.
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• W3179940237 date "2021-07-08" @default.
• W3179940237 modified "2023-09-25" @default.
• W3179940237 title "In Silico Prediction, Molecular Docking and Dynamics Studies of Steroidal Alkaloids of Holarrhena pubescens Wall. ex G. Don to Guanylyl Cyclase C: Implications in Designing of Novel Antidiarrheal Therapeutic Strategies" @default.
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• W3179940237 doi "https://doi.org/10.3390/molecules26144147" @default.
• W3179940237 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/8305770" @default.
• W3179940237 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/34299422" @default.
• W3179940237 hasPublicationYear "2021" @default.
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