Cited by 123Fungal and yeast genetics researchLipid metabolism and biosynthesisCancer, Lipids, and Metabolism

A Mutation in a Purported Regulatory Gene Affects Control of Sterol Uptake in Saccharomyces cerevisiae

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Crowley, James H., Leak, Frank W., Shianna, Kevin V., Tove, Shirley, Parks, Leo W.·1998·Journal of Bacteriology

Abstract

Aerobically growing wild-type strains of Saccharomyces cerevisiae are unable to take exogenously supplied sterols from media. This aerobic sterol exclusion is vitiated under anaerobic conditions, in heme-deficient strains, and under some conditions of impaired sterol synthesis. Mutants which can take up sterols aerobically in heme-competent cells have been selected. One of these mutations, designated upc2-1, gives a pleiotropic phenotype in characteristics as diverse as aerobic accumulation of sterols, total lipid storage, sensitivity to metabolic inhibitors, response to altered sterol structures, and cation requirements. During experiments designed to ascertain the effects of various cations on yeast with sterol alterations, it was observed that upc2-1 was hypersensitive to Ca2+. Using resistance to Ca2+ as a screening vehicle, we cloned UPC2 and showed that it is YDR213W, an open reading frame on chromosome IV. This belongs to a fungal regulatory family containing the Zn(II)2Cys6 binuclear cluster DNA binding domain. The single guanine-to-adenine transition in upc2-1 gives a predicted amino acid change from glycine to aspartic acid. The regulatory defect explains the semidominance and pleiotropic effects of upc2-1.

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Crossref · 10.1128/jb.180.16.4177-4183.1998

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Authors
Crowley, J. H., Leak, F. W., Shianna, K. V., Tove, S., & Parks, L. W.
Affiliations
North Carolina State University (US)
Venue
Journal of Bacteriology
Published
1998-08-15
Volume
180
Issue
16
Pages
4177-4183
ISSN
  • 0021-9193 (ISSN-L)
  • 1098-5530
OpenAlex
W2159654630
Cited by
123
References
26
Citations by year
2026: 3 · 2025: 1 · 2024: 1 · 2023: 1 · 2022: 3 · 2021: 5 · 2020: 7 · 2019: 3 · 2018: 4 · 2017: 5 · 2015: 3 · 2014: 4 · 2013: 10 · 2012: 2
FWCI
1.17
Type
journal article
Language
en
Open access
Locations
  • Journal of Bacteriology (publishedVersion)
  • PubMed Central (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • U.S. Department of Veterans Affairs (TPP 97-003)
  • Agricultural Research Service
  • Army Research Office
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Fungal and yeast genetics research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Lipid metabolism and biosynthesis
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer, Lipids, and Metabolism
Keywords
sterol uptake, UPC2, Saccharomyces cerevisiae, heme deficiency, sterol biosynthesis, pleiotropic mutations, calcium sensitivity, fat deposition, semi-dominant mutation
MeSH terms
Amino Acid Sequence, Base Sequence, Calcium, Fungal Proteins, Genes, Fungal, Genes, Regulator, Genetic Complementation Test, Molecular Sequence Data, Mutation, Saccharomyces cerevisiae, Sterols, Trans-Activators, Open Reading Frames, Saccharomyces cerevisiae Proteins

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