The C-terminus of the S. cerevisiae α-pheromone receptor mediates an adaptive response to pheromone

James B. Konopka, Duane D. Jenness, Leland Hartwell

Research output: Contribution to journalArticle

161 Citations (Scopus)

Abstract

STE2 encodes a component of the S. cerevisiae α-pheromone receptor that is essential for induction of physiological changes associated with mating. Analysis of C-terminal truncation mutants of STE2 demonstrated that the essential sequences for ligand binding and signal transduction are included within a region containing seven putative transmembrane domains. However, truncation of the C-terminal 105 amino acids of the receptor resulted in a 4- to 5-fold increase in cell-surface pheromone binding sites, a 10-fold increase in pheromone sensitivity, a defect in recovery of cell division after pheromone treatment, and a defect in pheromone-induced morphogenesis. Overproduction of STE2 resulted in about a 6-fold increase in α-pheromone binding capacity but did not produce the other phenotypes associated with the ste2-T326 mutant receptor. We conclude that the C-terminus of the receptor is responsible for one aspect of cellular adaptation to pheromone that is distinct from adaptation controlled by the SST2 gene, for decreasing the stability of the receptor, and for some aspect of cellular morphogenesis.

Original languageEnglish (US)
Pages (from-to)609-620
Number of pages12
JournalCell
Volume54
Issue number5
DOIs
StatePublished - Aug 26 1988
Externally publishedYes

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Pheromone Receptors
Pheromones
Saccharomyces cerevisiae
Morphogenesis
Amino Acid Receptors
Signal transduction
Defects
Cell Division
Signal Transduction
Genes
Binding Sites
Cells
Ligands
Phenotype
Recovery

ASJC Scopus subject areas

  • Cell Biology
  • Molecular Biology

Cite this

The C-terminus of the S. cerevisiae α-pheromone receptor mediates an adaptive response to pheromone. / Konopka, James B.; Jenness, Duane D.; Hartwell, Leland.

In: Cell, Vol. 54, No. 5, 26.08.1988, p. 609-620.

Research output: Contribution to journalArticle

Konopka, James B. ; Jenness, Duane D. ; Hartwell, Leland. / The C-terminus of the S. cerevisiae α-pheromone receptor mediates an adaptive response to pheromone. In: Cell. 1988 ; Vol. 54, No. 5. pp. 609-620.
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