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Carbon source-dependent transcriptional regulation of the mitochondrial glycerol-3-phosphate dehydrogenase gene, GUT2, from Saccharomyces cerevisiae.

Authors
Type
Published Article
Journal
Canadian Journal of Microbiology
0008-4166
Publisher
Canadian Science Publishing
Publication Date
Volume
46
Issue
12
Pages
1096–1100
Identifiers
PMID: 11142398
Source
Medline

Abstract

Cytosolic glycerol kinase (Gut1p) and mitochondrial glycerol-3-phosphate dehydrogenase (Gut2p) constitute the glycerol utilization pathway in Saccharomyces cerevisiae. Transcriptional analysis of the GUT2 gene showed that it was repressed by glucose and derepressed on the non-fermentable carbon sources, glycerol, lactate and ethanol. Derepression of GUT2 requires the protein kinase Snflp as well as the heteromeric protein complex, Hap2/3/4/5, and its putative DNA-binding site (UASHAP) located in the promoter region. Furthermore, glucose repression of GUT2 requires the negative regulator, Opi1p.

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