Abstract:
:Several cell division cycle (cdc) mutants of Saccharomyces cerevisiae (cdc28, cdc35, cdc19, cdc21, and cdc17) at the restrictive temperature (37 degrees C) in the presence of 1% glucose and defined medium divert most of the carbon (approximately 50%) to ethanol production with low biomass growth yields (Yglc) that correlate with carbon and energy uncoupling and arrest of cell proliferation. The cdc mutants studied are shown to be glucose-repressed, while this was not the case for the wild-type A364A (WT). At 37 degrees C, in the presence of 1% glycerol, derepressed cdc28 mutant cells did not show arrest of cell division and carbon and energy uncoupling since the Yglc levels measured were similar to those of the WT strain. These results suggest that the increased fermentative ability and carbon and energy uncoupling exhibited in the presence of glucose by cdc mutants with respect to those exhibited by the WT may be due to catabolite repression.
journal_name
Exp Cell Resjournal_title
Experimental cell researchauthors
Mónaco ME,Valdecantos PA,Aon MAdoi
10.1006/excr.1995.1062subject
Has Abstractpub_date
1995-03-01 00:00:00pages
52-6issue
1eissn
0014-4827issn
1090-2422pii
S0014-4827(85)71062-2journal_volume
217pub_type
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