Format

Send to

Choose Destination
Biochem Biophys Res Commun. 1998 Dec 18;253(2):407-14.

A region of the cellobiohydrolase I promoter from the filamentous fungus Trichoderma reesei mediates glucose repression in Saccharomyces cerevisiae, dependent on mitochondrial activity.

Author information

1
Department of Biochemistry, Institute of Chemistry, University of São Paulo, Brazil.

Abstract

The upstream activating region that controls cellulose-induced expression of the glucose-repressible cellobiohydrolase I gene (UARcb1) of the filamentous fungus Trichoderma reesei is shown to mediate transcription and glucose repression of a reporter gene in Saccharomyces cerevisiae, a unicellular microorganism that lacks the genes required for the utilization of cellulose. Glucose-controlled transcription mediated by UARcb1 requires the products of the genes SNF1 and SSN6, a protein kinase and a repressor, respectively, that regulate glucose-repressible yeast genes. Previously, it has been shown that mitochondrial function is implicated in cellobiohydrolase I gene expression in T. reesei and this sensitivity to the metabolic state of the mitochondria was shown to be transcriptionally controlled by the 5'-flanking sequence of the cbh1 gene [Abrahão-Neto et al. (1995) Biochemistry 34, 10456-10462]. Remarkably, transcription of the reporter gene controlled by UARcb1 in S. cerevisiae also showed a requirement for active mitochondria, suggesting that a common mechanism involving mitochondrial activity controls glucose-repressible genes in both microorganisms.

PMID:
9878550
DOI:
10.1006/bbrc.1998.9758
[Indexed for MEDLINE]

Supplemental Content

Full text links

Icon for Elsevier Science
Loading ...
Support Center