Reference: de Jong-Gubbels P, et al. (1997) The Saccharomyces cerevisiae acetyl-coenzyme A synthetase encoded by the ACS1 gene, but not the ACS2-encoded enzyme, is subject to glucose catabolite inactivation. FEMS Microbiol Lett 153(1):75-81

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Abstract


In Saccharomyces cerevisiae, the structural genes ACS1 and ACS2 each encode an isoenzyme of acetyl-CoA synthetase (ACS; EC 6.2.1.1). Involvement of glucose catabolite repression in regulation of the two isoenzymes was investigated by following ACS activity after glucose pulses (100 mM) to ethanol-limited chemostat cultures. In wild-type S. cerevisiae and in an isogenic strain in which ACS2 had been disrupted, ACS activity decreased after a glucose pulse. No such inactivation was observed in a strain in which ACS1 was disrupted. Western blots demonstrated that the ACS1 product, but not the ACS2 product, was degraded after a glucose pulse. Inactivation kinetics of the ACS1 product resembled those of isocitrate lyase.

Reference Type
Journal Article | Research Support, Non-U.S. Gov't
Authors
de Jong-Gubbels P, van den Berg MA, Steensma HY, van Dijken JP, Pronk JT
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