ArticleGenetics1996
Removal of Mig1p binding site converts a MAL63 constitutive mutant derived by interchromosomal gene conversion to glucose insensitivity.
Article in Genetics, 1996. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed, 23 citations in OpenAlex.
- Glucose signaling in Saccharomyces cerevisiae.Microbiology and molecular biology reviews : MMBR · 2006Review
- Characterization of three related glucose repressors and genes they regulate in Saccharomyces cerevisiae.Genetics · 1998Article
- Snf1 protein kinase regulates phosphorylation of the Mig1 repressor in Saccharomyces cerevisiae.Molecular and cellular biology · 1998Article
- Yeast carbon catabolite repression.Microbiology and molecular biology reviews : MMBR · 1998Review
- Constitutive mutations of the Saccharomyces cerevisiae MAL-activator genes MAL23, MAL43, MAL63, and mal64.Genetics · 1997Article
- Regulated nuclear translocation of the Mig1 glucose repressor.Molecular biology of the cell · 1997Article
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Authors and funding
2 authors at 1 institution in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
Maltose fermenting strains of Saccharomyces cerevisiae have one or more complex loci called MAL. Each locus comprises at least three genes: MALx1 encodes maltose permease, MALx2 encodes maltase, and MALx3 encodes an activator of MALx1 and MALx2 (x denotes one of five MAL loci, with x = 1, 2, 3, 4, or 6). The MAL43c allele is constitutive and relatively insensitive to glucose repression. To understand better this unique phenotype of MAL43c, we have isolated several MAL63c constitutive mutants from a MAL6 strain. All constitutive mutants remain glucose repressible, and all have multiple amino acid substitutions in the C-terminal region, now making this region of Mal63cp similar to that of Mal43cp. These changes have been generated by gene conversion, which transfers DNA from the telomeres of chromosome II and chromosome III or XVI to chromosome VIII (MAL6). The removal of a Mig1p binding site from the MAL63c promoter leads to a loss of glucose repression, imitating the phenotype of MAL43c. Conversely, addition of a Mig1p binding site to the promoter of MAL43c converts it to glucose sensitivity. Mig1p modulation of Mal63p and Mal43p expression therefore plays a substantial role in glucose repression of the MAL genes.
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