A role for ion homeostasis in yeast ionic liquid tolerance

The model yeast Saccharomyces cerevisiae is being developed as a biocatalyst for the conversion of renewable lignocellulosic biomass into biofuels. The ionic liquid 1-ethyl-3-methylimidazolium chloride (EMIMCl) solubilizes lignocellulose for deconstruction into fermentable sugars, but it inhibits ye...

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Detalles Bibliográficos
Autores principales: Liu, Lisa, Ansari, Rahim U., Vang-Smith, Maikayeng, Hittinger, Chris Todd, Sato, Trey K.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Caltech Library 2023
Materias:
New Finding
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9938406/
https://www.ncbi.nlm.nih.gov/pubmed/36820393
http://dx.doi.org/10.17912/micropub.biology.000718
Descripción
Sumario:The model yeast Saccharomyces cerevisiae is being developed as a biocatalyst for the conversion of renewable lignocellulosic biomass into biofuels. The ionic liquid 1-ethyl-3-methylimidazolium chloride (EMIMCl) solubilizes lignocellulose for deconstruction into fermentable sugars, but it inhibits yeast fermentation. EMIMCl tolerance is mediated by the efflux pump Sge1p and uncharacterized protein Ilt1p. Through genetic investigation, we found that disruption of ion homeostasis through mutations in genes encoding the Trk1p potassium transporter and its protein kinase regulators, Sat4p and Hal5p, causes EMIMCl sensitivity. These results suggest that maintenance of ion homeostasis is important for tolerance to EMIMCl.

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