2024-03-28T10:43:44Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/237192016-02-16T07:01:50Zcom_10261_22com_10261_1col_10261_275
Inactivation of fructose-1,6-diphosphatase by glucose in yeast
Gancedo, Carlos
5 pages, 2 figures, 2 tables.
Fructose-1,6-diphosphatase was derepressed in Saccharomyces cerevisiae by incubation in media containing non-sugar carbon sources. Addition of glucose to a derepressed culture led to a rapid loss of the measurable activity of the enzyme. Fructose and mannose also produced inactivation, but 2-deoxyglucose was ineffective. Experiments with cycloheximide indicated that the inactivation does not require protein synthesis. It was also shown that the process is not energy-dependent. The reappearance of the enzyme was dependent on an energy source and was prevented by cycloheximide. These results suggest that fructose diphosphatase inactivation is irreversible and that reappearance of enzyme activity implies de novo synthesis. Screening of different genera of yeasts has shown that the inactivation of fructose diphosphatase is a relatively widespread phenomenon.
2010-04-29T09:08:48Z
2010-04-29T09:08:48Z
1971-08
artÃculo
Journal of Bacteriology 107(2): 401-405 (1971)
0021-9193
http://hdl.handle.net/10261/23719
eng
http://jb.asm.org/content/107/2/401.short
closedAccess
American Society for Microbiology