SGD Paper Help


Page Contents:
Tedford K, et al.  (1997) Regulation of the mating pheromone and invasive growth responses in yeast by two MAP kinase substrates. Curr Biol 7(4):228-38

Abstract: BACKGROUND: In the budding yeast Saccharomyces cerevisiae, components ofa single mitogen-activated protein (MAP) kinase pathway transduce two distinct signals, each of which activates an independent developmental programme: peptide mating pheromones initiate the mating response, whereas nutrient limitation initiates filamentous growth. One of the MAP kinases in this pathway, Fus3, triggers mating but antagonizes filamentous growth, while the other, Kss 1, preferentially triggers filamentous growth. Both kinases activate the same transcription factor, Ste 12, which can stimulate gene expression specific to each of the developmental programmes. The precise mechanism by which these MAP kinases activate Ste 12, however, is not clear. RESULTS: Two newly identified proteins, Rst 1 and Rst 2 (also known as Dig1 and Dig2), were found to associate physically with Fus3 and Ste12. Rst1 and Rst2 were prominent substrates in kinase reactions of Fus3 immune complexes from pheromone-treated cells. Association of Fus3 with Ste12 required Rst1 and Rst2, and activation of Fus3 by pheromone caused release of Ste12 from the Fus3 complex. Although rst1 and rst2 single mutants had no obvious phenotype, both filamentous growth and mating-specific gene expression were constitutive in rst1 rst2 double mutants. The phenotype of rst1 rst2 cells required Ste12 function, but did not require the function of upstream kinases. Consistent with Rst1 and Rst2 having a role in Ste12 regulation, both proteins were localized to the nucleus. CONCLUSIONS: Rst1 and Rst2 repress the mating and filamentous growth responses of S. cerevisiae by directly inhibiting Ste12. Activation of Fus3 or Kss1 may cause phosphorylation-dependent release of Ste12 from Rst1/Rst2 and thereby activate Ste12-dependent transcription.

Status: Published Type: Journal Article PubMed ID: 9094309

Topics addressed in this paper

Number of different genes curated to this paper: 5

  • To find other papers on a gene and topic, click on the colored ball in the appropriate box.
  • displays other papers with information about that topic for that gene.
  • displays other papers in SGD that are associated with that topic.
    The topic is addressed in these papers but does not describe a specific gene or chromosomal feature.
  • To go to the Locus page for a gene, click on the gene name.
Topics Genes linked to topics
DIG1 DIG2 FUS3 KSS1 STE12
Additional Literature blue ball blue ball
Alias blue ball blue ball
Archived Literature blue ball
Cellular Location blue ball blue ball
Function/Process blue ball blue ball
Fungal Related Genes/Proteins blue ball
Genetic Interactions blue ball
Mutants/Phenotypes blue ball blue ball
Primary Literature blue ball blue ball blue ball
Protein Processing/Modification/Regulation blue ball blue ball
Protein-protein Interactions blue ball blue ball blue ball
Regulation of blue ball
Regulatory Role blue ball
Strains/Constructs blue ball blue ball
Techniques and Reagents blue ball blue ball blue ball

Author Searches

To find contact information or other publications by the authors of this paper, follow these three steps:
  1. (1) Choose an author,
  2. (2) Choose a search parameter,
  3. (3) Click to implement
Page Contents: