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FEMS Microbiol Lett. 1998 Nov 1;168(1):25-30.

The RAG3 gene of Kluyveromyces lactis is involved in the transcriptional regulation of genes coding for enzymes implicated in pyruvate utilization and genes of the biosynthesis of thiamine pyrophosphate.

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  • 1Centre de Génétique Moléculaire et Cellulaire, CNRS UMR 5534, Université Claude Bernard, Villeurbanne, France.

Abstract

The RAG3 gene of Kluyveromyces lactis, a homolog of PDC2 of Saccharomyces cerevisiae, is known to be a regulator of the pyruvate decarboxylase gene KlPDC1. We have identified new target genes for Rag3p. The RAG3 gene product was found to be required for the transcription of two genes of the biosynthetic pathway of thiamine (a cofactor of pyruvate decarboxylase). Conversely, the RAG3 gene product partially repressed the expression of the pyruvate dehydrogenase gene KlPDA1. Therefore, RAG3 may act as a general regulator in the balance of the two alternative pathways of pyruvate metabolism in yeast.

PMID:
9812359
[PubMed - indexed for MEDLINE]
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