Preprint Article Version 1 This version is not peer-reviewed

Computational Improvement of Small-Molecule Inhibitors of Bacillus anthracis Protective Antigen Activation through Isostere-Based Substitutions

Version 1 : Received: 17 December 2019 / Approved: 19 December 2019 / Online: 19 December 2019 (07:06:38 CET)

How to cite: Silva, S.V.R.L.; Silva, P.J. Computational Improvement of Small-Molecule Inhibitors of Bacillus anthracis Protective Antigen Activation through Isostere-Based Substitutions. Preprints 2019, 2019120247 (doi: 10.20944/preprints201912.0247.v1). Silva, S.V.R.L.; Silva, P.J. Computational Improvement of Small-Molecule Inhibitors of Bacillus anthracis Protective Antigen Activation through Isostere-Based Substitutions. Preprints 2019, 2019120247 (doi: 10.20944/preprints201912.0247.v1).

Abstract

There has recently been interest in the development of small-molecule inhibitors of the oligomerization of Bacillus anthracis protective antigen for therapeutic use. Some of the proposed lead compounds have, however, unfavorable solubility in aqueous medium, which prevents their clinical use. In this computational work, we have designed several hundreds of derivatives with progressively higher hydrosolubility and tested their ability to dock the relevant binding cavity. The highest-ranking docking hits were then subjected to 125 ns-long simulations to ascertain the stability of the binding modes. Several of the potential candidates performed quite disappointingly , but two molecules showed very stable binding modes throughout the complete simulations. Besides the identification of these two promising leads, these molecular dynamics simulations allowed the discovery of several insights that shall prove useful in the further improvement of these candidate towards higher potency and stability.

Subject Areas

anthrax; lead compounds; molecular dynamics; docking

Comments (0)

We encourage comments and feedback from a broad range of readers. See criteria for comments and our diversity statement.

Leave a public comment
Send a private comment to the author(s)
Views 0
Downloads 0
Comments 0
Metrics 0


×
Alerts
Notify me about updates to this article or when a peer-reviewed version is published.