Abstract

AbstractObjectiveAeromonas hydrophila, a leading pathogen of aquatic organisms, poses a significant challenge in terms of effective and safe inhibition.MethodsThrough the method of experiments and molecular simulations, we discovered that emodin effectively inhibits the A. hydrophila via the binding of emodin with AtpE (ATP synthase subunit C). Bacterial inhibition experiments show that emodin effectively inhibits the activity and growth of A. hydrophila.ResultFurther molecular docking and molecular dynamics simulation revealed that emodin binds directly to AtpE. More specifically, it binds to certain residues of AtpE, including TYR73, LEU70, ALA13, TYR10, MET17, and ALA14, ultimately leading to inhibition of activity.ConclusionConsequently, our discovery sheds new light on exploring the molecular mechanism through which emodin displays antimicrobial activity against A. hydrophila.

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