Reference: Klein CJ, et al. (1999) Investigation of the impact of MIG1 and MIG2 on the physiology of Saccharomyces cerevisiae. J Biotechnol 68(2-3):197-212

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Abstract

The gene functions of MIG1 and MIG2 are well known for their role in glucose control in Saccharomyces cerevisiae. A prototrophic mig1 disruptant (T468) and mig1mig2 double disruptant (T475) as well as their congenic wild-type strain (CEN.PK 113-7D) were analysed for changes in their peripheral metabolism (batch cultivations on sugar mixtures) and central metabolism (batch and continuous cultivations as well as acceleratostats). Sucrose metabolism was alleviated of glucose control in the mig1 disruptant, and even more so in the mig1mig2 disruptant compared with their wild-type strain. The lag phase in a batch cultivation grown on a glucose-galactose mixture was reduced by 50% in either disruptant, i.e. additional disruption of MIG2 in a mig1 background did not further alleviate galactose metabolism from glucose control. In contrast, both disruptants exhibited a more stringent glucose control of maltose metabolism compared with the wild-type strain. Growing on glucose, the mig1mig2 double disruptant exhibited a 12% higher specific growth rate than the wild-type strain, as well as a significantly higher respiratory capacity.

Reference Type
Journal Article | Research Support, Non-U.S. Gov't
Authors
Klein CJ, Rasmussen JJ, Ronnow B, Olsson L, Nielsen J
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