Binding interactions of Trametes villosa and Trametes lactinea laccases with 4-nonylphenol and its intermediates: molecular docking and molecular dynamics approaches.
da Silva Santos RL, Bomfim NF, Motteran F
Phytoremediation
4-nonylphenol washes off your clothes, dishes, and garden pesticides into waterways, where it quietly disrupts the hormones of fish, frogs, and the plants you eat — and these fungal enzymes may offer a natural way to neutralize it before it reaches your garden or tap water.
Researchers used computer modeling to study how enzymes from two types of shelf fungi — the kind you might see growing on a dead tree — could latch onto and break down a hormone-disrupting chemical found in many household and industrial products. The simulations showed the enzymes grip the chemical tightly at specific spots, which is a good sign they can chemically neutralize it. This is a step toward using fungi-based tools to clean up polluted water and soil naturally.
Key Findings
Molecular docking showed favorable (negative) binding energies between both Trametes fungal enzymes and 4-nonylphenol, indicating strong and spontaneous binding interactions
Electronic property descriptors (global reactivity indices) of the pollutant and its breakdown intermediates correlated with how well each molecule bound to the enzyme active site
Molecular dynamics simulations confirmed that the enzyme-pollutant complexes were stable over time, supporting the feasibility of enzymatic biodegradation of 4-nonylphenol
chevron_right Technical Summary
Scientists tested whether enzymes from two wood-rotting fungi can break down 4-nonylphenol, a common chemical pollutant from detergents and plastics that disrupts hormones in animals and plants. Computer simulations showed these fungal enzymes bind tightly to the pollutant, suggesting they could be used to clean contaminated water and soil.
Abstract Preview
Emerging pollutants such as 4-nonylphenol (4-NP) act as endocrine disruptors and have been associated with reproductive toxicity in humans and wildlife, as well as with physiological disturbances i...
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