Reference: Murata Y, et al. (2023) Large-scale preparation of yeast strains expressing condensates derived from a glycolytic enzyme via controlled dissolved oxygen levels under hypoxia. Lett Appl Microbiol 76(8)

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Abstract


Under hypoxia, Saccharomyces cerevisiae forms cytoplasmic condensates composed of proteins, including glycolytic enzymes, that are thought to regulate cellular metabolism. However, the hypoxic conditions required for condensate formation remain unclear. In this study, we developed a 300-mL-scale culture method to produce condensate-forming cells by precisely controlling the dissolved oxygen (DO) level in the media. Using enolase as a model, a foci formation rate of more than 50% was achieved at ∼0.1% DO, and the results showed that the DO level affected the foci formation rate. The foci formation rates of the previously reported foci-deficient strains and strains with single amino acid substitutions in the endogenous enolase were examined, and the effect of these amino acid substitutions on glucose consumption and ethanol and glycerol production under hypoxia was evaluated. The results of this study contribute to the investigation of the mechanisms that regulate biomacromolecular condensates under hypoxia.

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Journal Article
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Murata Y, Hirayama R, Miura N, Kataoka M
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