In vitro and in silico study of the endosulfan degradation by Bacillus subtilis sp. strain UAMC.
Casanova A, Hernández S, Esquivel-Hernández DA, Revah S, Ortíz I
Phytoremediation
Endosulfan residues persist in garden soils and farm fields decades after application, quietly accumulating in the vegetables and fruits you grow — and this bacterium already living in healthy soil may be quietly neutralizing it.
Endosulfan is a powerful insecticide that was banned in many countries because it sticks around in soil and water for years and can make people and animals sick. Scientists discovered that a helpful bacterium naturally found in soil can chew through nearly all of one form of endosulfan very efficiently, and it does so through a pathway that avoids creating an even nastier byproduct. This means we might be able to use or encourage this bacterium to clean up contaminated soils.
Key Findings
Bacillus subtilis strain UAMC degraded 97.6% of α-endosulfan and 69.45% of β-endosulfan in laboratory conditions.
The toxic metabolite endosulfan sulfate was not detected, indicating the bacterium uses a safer hydrolytic breakdown pathway.
Molecular docking analysis showed the enzyme laccase (3ZDW) can physically bind and transform endosulfan metabolites despite not having evolved specifically to do so.
chevron_right Technical Summary
Researchers found that a common soil bacterium, Bacillus subtilis, can break down endosulfan — a toxic, banned pesticide still lingering in soils worldwide — destroying over 97% of its most harmful form without producing the even-more-toxic byproduct endosulfan sulfate.
Abstract Preview
The widespread use of endosulfan, a persistent organochlorine pesticide, has raised significant environmental and health concerns due to its toxicity and potential for bioaccumulation. This study i...
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