Wide distribution of D-xylose dehydrogenase in yeasts reveals a new element in the D-xylose metabolism for bioethanol production.

Autor:	Galhardo JP; Laboratory of Genomics and bioEnergy (LGE), Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, UNICAMP, Campinas, São Paulo, Brazil., Piffer AP; Laboratory of Genomics and bioEnergy (LGE), Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, UNICAMP, Campinas, São Paulo, Brazil., Fiamenghi MB; Laboratory of Genomics and bioEnergy (LGE), Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, UNICAMP, Campinas, São Paulo, Brazil., Borelli G; Laboratory of Genomics and bioEnergy (LGE), Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, UNICAMP, Campinas, São Paulo, Brazil., da Silva DRM; Laboratory of Genomics and bioEnergy (LGE), Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, UNICAMP, Campinas, São Paulo, Brazil., Vasconcelos AA; Laboratory of Genomics and bioEnergy (LGE), Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, UNICAMP, Campinas, São Paulo, Brazil., Carazzolle MF; Laboratory of Genomics and bioEnergy (LGE), Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, UNICAMP, Campinas, São Paulo, Brazil., Pereira GAG; Laboratory of Genomics and bioEnergy (LGE), Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, UNICAMP, Campinas, São Paulo, Brazil., José J; Laboratory of Genomics and bioEnergy (LGE), Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, UNICAMP, Campinas, São Paulo, Brazil.
Jazyk:	angličtina
Zdroj:	FEMS yeast research [FEMS Yeast Res] 2023 Jan 04; Vol. 23.
DOI:	10.1093/femsyr/foad003
Abstrakt:	D-xylose utilization by yeasts is an essential feature for improving second-generation ethanol production. However, industrial yeast strains are incapable of consuming D-xylose. Previous analyzes of D-xylose-consuming or fermenting yeast species reveal that the genomic features associated with this phenotype are complex and still not fully understood. Here we present a previously neglected yeast enzyme related to D-xylose metabolism, D-xylose dehydrogenase (XylDH), which is found in at least 105 yeast genomes. By analyzing the XylDH gene family, we brought evidence of gene evolution marked by purifying selection on codons and positive selection evidence in D-xylose-consuming and fermenting species, suggesting the importance of XylDH for D-xylose-related phenotypes in yeasts. Furthermore, although we found no putative metabolic pathway for XylDH in yeast genomes, namely the absence of three bacterial known pathways for this enzyme, we also provide its expression profile on D-xylose media following D-xylose reductase for two yeasts with publicly available transcriptomes. Based on these results, we suggest that XylDH plays an important role in D-xylose usage by yeasts, likely being involved in a cofactor regeneration system by reducing cofactor imbalance in the D-xylose reductase pathway. (© The Author(s) 2023. Published by Oxford University Press on behalf of FEMS.)
Databáze:	MEDLINE
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