Cited by 59Heat shock proteins researchFungal and yeast genetics researchBacterial Genetics and Biotechnology

In the yeast heat shock response, Hsf1-directed induction of Hsp90 facilitates the activation of the Slt2 (Mpk1) mitogen-activated protein kinase required for cell integrity.

Open access
Truman, Andrew W., Millson, Stefan H., Nuttall, James M., Mollapour, Mehdi, Prodromou, Chrisostomos, Piper, Peter W.·2007·Eukaryotic Cell

Abstract

Yeast is rendered temperature sensitive with loss of the C-terminal (CT) domain of heat shock transcription factor (Hsf1). This domain loss was found to abrogate heat stimulation of Slt2 (Mpk1), the mitogen-activated protein kinase that directs the reinforced cell integrity gene expression needed for high-temperature growth. In Hsf1 CT domain-deficient cells, Slt2 still undergoes Mkk1/2-directed dual-Thr/Tyr phosphorylation in response to the heat stimulation of cell integrity pathway signaling, but the low Hsp90 expression level suppresses any corresponding increase in Slt2 kinase activity due to Slt2 being a "client" of the Hsp90 chaperone. A non-Hsf1-directed Hsp90 overexpression restored the heat induction of Slt2 activity in these cells, as well as both Slt2-dependent (Rlm1, Swi4) and Slt2-independent (MBF) transcriptional activities. Their high-temperature growth was also rescued, not just by this Hsp90 overexpression but by osmotic stabilization, by the expression of a Slt2-independent form of the Rlm1 transcriptional regulator of cell integrity genes, and by a multicopy SLT2 gene vector. In providing the elevated Hsp90 needed for an efficient activation of Slt2, heat activation of Hsf1 indirectly facilitates (Slt2-directed) heat activation of yet another transcription factor (Rlm1). This provides an explanation as to why, in earlier transcript analysis compared to chromatin immunoprecipitation studies, many more genes of yeast displayed an Hsf1-dependent transcriptional activation by heat than bound Hsf1 directly. The levels of Hsp90 expression affecting transcription factor regulation by Hsp90 client protein kinases also provides a mechanistic model for how heat shock factor can influence the expression of several non-hsp genes in higher organisms.

Integrity signals

Registry

Crossref · 10.1128/ec.00009-07

Cites

60 of 60 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

We couldn’t retrieve this paper’s full text, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Truman, A. W., Millson, S. H., Nuttall, J. M., Mollapour, M., Prodromou, C., & Piper, P. W.
Affiliations
  • University of Sheffield (GB)
  • Institute of Cancer Research (GB)
Corresponding author
Piper, Peter W.
Venue
Eukaryotic Cell
Published
2007-04
Volume
6
Issue
4
Pages
744-752
ISSN
  • 1535-9778 (ISSN-L)
  • 1535-9786
OpenAlex
W2154087334
Cited by
59
References
58
Citations by year
2026: 1 · 2025: 6 · 2024: 1 · 2022: 5 · 2021: 2 · 2020: 6 · 2019: 3 · 2018: 4 · 2017: 2 · 2016: 1 · 2014: 1 · 2012: 5
FWCI
2.38
Type
journal article
Language
en
Open access
Locations
  • Eukaryotic Cell (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Figshare (submittedVersion, cc-by)
  • Sussex Research Online (University of Sussex) (submittedVersion)
Funders
  • Wellcome Trust (074575)
  • Biotechnology and Biological Sciences Research Council (C506721/1)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Heat shock proteins research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Fungal and yeast genetics research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Bacterial Genetics and Biotechnology
Keywords
heat shock response, HSF1, HSP90, mitogen-activated protein kinase, cell integrity pathway, Hsp90 client proteins, Rlm1, Swi4, MBF, osmotic stabilization, temperature sensitivity, transcriptional activation, Saccharomyces cerevisiae
MeSH terms
DNA-Binding Proteins, Enzyme Activation, Heat-Shock Proteins, Phosphorylation, Saccharomyces cerevisiae, Temperature, Transcription Factors, Transcription, Genetic, Protein Structure, Tertiary, HSP90 Heat-Shock Proteins, Heat-Shock Response, Macrolides, Mitogen-Activated Protein Kinases, MADS Domain Proteins, Saccharomyces cerevisiae Proteins, MAP Kinase Kinase 1, Mutant Proteins

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review