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Editor response for version 2
AI summary Read the abstract
Researchers studied water samples from two sites in Côte d'Ivoire, including an urban lagoon and a reference lake, to look for microbes and genes capable of breaking down PET plastic. Genetic analysis found many previously uncharacterized microbial species and genes, including four candidate enzymes that structurally resembled a known plastic-degrading enzyme, which could be tested further in lab experiments.
Plastic pollution threatens aquatic ecosystems in Côte d’Ivoire, yet their microbial potential for polyethylene terephthalate (PET) degradation remains poorly characterized. We applied shotgun metagenomics to five samples from Biétry bay, an urban site in the Ébrié lagoon, and Kassembié lake, a low-impact reference site. MetaPhlAn4 detected 131 site-specific, uncharacterized species-level genome bins, including 76 found only at Biétry. Functional annotation of the non-redundant gene catalogue identified 15,860 hydrolase genes and 195 genes assigned to the CE1 carbohydrate esterase family, used here as a proxy for general ester-cleaving potential. Structural prediction with ColabFold (AlphaFold2) and comparison with IsPETase using TM-align prioritized four novel PETase-like candidates, BietPETase1–4. These findings reveal under-explored microbial and enzymatic diversity in Ivorian aquatic ecosystems and provide candidates for experimental validation in PET-bioremediation research.
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Reviewer response for version 2
AI summary Read the abstract
Researchers studied water samples from two sites in Côte d'Ivoire, an urban lagoon and a reference lake, analyzing genetic material from microbes living there. They found many unknown microbial species and genes, including enzymes that may break down plastic, and identified four candidate enzymes for further lab testing against PET plastic.
Editor response for version 1
AI summary Read the abstract
Scientists studying a heavily polluted lagoon in Côte d'Ivoire discovered bacteria carrying genes for four new enzymes that may be able to break down PET plastic — the material used in water bottles and food packaging. This matters because plastic pollution in waterways eventually breaks down into microplastics that can enter our food and water supply, and finding natural enzymes that degrade plastic waste could offer a more eco-friendly cleanup solution before that happens. That said, this research identified these enzymes using computer modeling, so lab testing is still needed to confirm they actually work as hoped.
Reviewer response for version 1
AI summary Read the abstract
Scientists studying a heavily polluted lagoon in Côte d'Ivoire discovered bacteria that have naturally evolved the ability to break down plastic waste, including four brand-new enzymes that may help degrade PET plastic (the kind used in water bottles). This matters because plastic pollution in waterways eventually breaks down into microplastics that can enter our food and water supply, so finding natural "plastic-eating" microbes could lead to better ways to clean up pollution before it affects human health. While these enzymes still need further testing, this research points to a promising, nature-based tool for tackling the growing microplastic problem
Reviewer response for version 1
AI summary Read the abstract
Scientists studying a heavily polluted lagoon in Côte d'Ivoire discovered bacteria that have naturally evolved the ability to break down PET plastic (the kind used in water bottles), including four brand-new enzymes never seen before. This matters because plastic pollution in waterways eventually breaks down into microplastics that can enter our food and water supply, so finding natural "plastic-eating" enzymes could lead to better tools for cleaning up plastic waste before it becomes a health hazard. While this is an early discovery step—these enzymes still need to be tested and developed further—it offers a promising, nature-based
Novel putative PETase candidates from metagenomic mining of Ebrié lagoon and Kassembié lake, Côte d'Ivoire
AI summary Read the abstract
Researchers applied shotgun metagenomics to sediment samples from a heavily polluted Ivorian lagoon and a reference lake, identifying four novel putative PETase enzymes through AlphaFold2 structural validation — demonstrating that plastic-polluted West African aquatic ecosystems harbor untapped enzymatic potential for PET biodegradation.
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