ArticleFEMS yeast research2025
Challenges in elucidating ethylene glycol metabolism in Saccharomyces cerevisiae.
Article in FEMS yeast research, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed.
- Plastic-Degrading Microorganisms: Biodegradation Pathways and Habitat Origins.Molecules (Basel, Switzerland) · 2026Review
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7 authors.
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Abstract
Polyethylene terephthalate (PET) is one of the most used polymers in the packaging industry; enzymatic recycling is emerging as a sustainable strategy to deal with waste PET, producing the virgin monomers terephthalic acid and ethylene glycol (EG). These monomers can be feedstocks for further microbial transformations. While EG metabolism has been uncovered in bacteria, in yeast the pathway for the oxidation to glycolic acid (GA) has only been proposed, but never experimentally elucidated. In this work, we investigated in Saccharomyces cerevisiae the potential contribution to this metabolism of two endogenous genes, YLL056C (a putative alcohol dehydrogenase) and GOR1 (glyoxylate reductase). Secondly, the possible role of alcohol dehydrogenases (ADHs) was considered, too. Finally, two heterologous genes (gox0313 from Gluconobacter oxydans and AOX1 from Komagataella phaffii) were expressed with the intent to push EG oxidation toward GA. Our main findings revealed that (i) Gor1, Yll056c, and ADHs are not involved in EG oxidation and (ii) the bottleneck of the catabolism is the first step in the pathway, due to the endogenous mechanisms for aldehyde detoxification. Multiomics studies are required to completely elucidate the pathway for EG catabolism, while further engineering directed toward relieving the bottleneck is needed to fully unleash the potential of yeasts for the upcycling of EG to GA.
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