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Reference: Hebert A, et al. (2011) Biodiversity in sulfur metabolism in hemiascomycetous yeasts. FEMS Yeast Res 11(4):366-78

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Abstract

The evolution of the metabolism of sulfur compounds among yeast species was investigated. Differences between species were observed in the cysteine biosynthesis pathway. Most yeast species possess two pathways leading to cysteine production, the transsulfuration pathway and the O-acetyl-serine (OAS) pathway, with the exception of Saccharomyces cerevisiae and Candida glabrata, which only display the transsulfuration pathway, and Schizosaccharomyces pombe, which only have the OAS pathway. An examination of the components of the regulatory network in the different species shows that it is conserved in all the species analyzed, as its central component Met4p was shown to keep its functional domains and its partners were present. The analysis of the presence of genes involved in the catabolic pathway shows that it is evolutionarily conserved in the sulfur metabolism and leads us to propose a role for two gene families which appeared to be highly conserved. This survey has provided ways to understand the diversity of sulfur metabolism products among yeast species through the reconstruction of these pathways. This diversity could account for the difference in metabolic potentialities of the species with a biotechnological interest.

Reference Type
Journal Article
Authors
Hebert A, Casaregola S, Beckerich JM
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