Cited by 252Heat shock proteins researchEvolution and Genetic DynamicsRNA and protein synthesis mechanisms

Under cover: causes, effects and implications of Hsp90‐mediated genetic capacitance

Sangster, Todd A., Lindquist, Susan, Queitsch, Christine·2004·BioEssays

Abstract

The environmentally responsive molecular chaperone Hsp90 assists the maturation of many key regulatory proteins. An unexpected consequence of this essential biochemical function is that genetic variation can accumulate in genomes and can remain phenotypically silent until Hsp90 function is challenged. Notably, this variation can be revealed by modest environmental change, establishing an environmentally responsive exposure mechanism. The existence of diverse cryptic polymorphisms with a plausible exposure mechanism in evolutionarily distant lineages has implications for the pace and nature of evolutionary change. Chaperone‐mediated storage and release of genetic variation is undoubtedly rooted in protein‐folding phenomena. As we discuss, proper protein folding crucially affects the trajectory from genotype to phenotype. Indeed, the impact of protein quality‐control mechanisms and other fundamental cellular processes on evolution has heretofore been overlooked. A true understanding of evolutionary processes will require an integration of current evolutionary paradigms with the many new insights accruing in protein science. BioEssays 26:348–362, 2004. © 2004 Wiley Periodicals, Inc.

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Crossref · 10.1002/bies.20020

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  • Hsp90 can buffer the effects of genetic or epigenetic variation, keeping it silent until released when the chaperone reservoir is compromised in response to stress.

    “First, Hsp90 can buffer the effects of genetic or epigenetic variation, keeping it silent until released when the chaperone reservoir is compromised in response to stress.”
  • Hsp90's role as a capacitor for variation has been observed in diverse eukaryotes including flies, plants, and fungi.

    “This role as a capacitor for variation has been observed in diverse eukaryotes including flies, plants, and fungi18,19,129-134.”
  • The ability of an organism to tolerate environmental and genetic variation may be dependent on phenotypic capacitors, a class of genes whose inactivation may increase phenotypic variation among genetically diverse individuals in a population.

    “The ability of an organism to tolerate environmental and genetic variation may be dependent on phenotypic capacitors, a class of genes whose inactivation may increase phenotypic variation among genetically diverse individuals in a population (18).”
  • Hsp90, the canonical capacitor, is a molecular chaperone controlling numerous signaling pathways and thus is considered a multi-functional or pleiotropic gene.

    “Hsp90, the canonical capacitor, is a molecular chaperone controlling numerous signaling pathways and thus is considered a multi-functional or pleiotropic gene (18).”

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Authors
Sangster, T. A., Lindquist, S., & Queitsch, C.
Affiliations
  • University of Chicago (US)
  • Whitehead Institute for Biomedical Research (US)
  • Harvard University (US)
Corresponding author
Queitsch, Christine
Venue
BioEssays
Publisher
Wiley
Published
2004-03-26
Volume
26
Issue
4
Pages
348-362
ISSN
  • 0265-9247 (ISSN-L)
  • 1521-1878
OpenAlex
W2147056656
Cited by
251
References
112
Citations by year
2026: 3 · 2025: 7 · 2024: 6 · 2023: 4 · 2022: 2 · 2021: 2 · 2020: 2 · 2019: 7 · 2018: 12 · 2017: 7 · 2016: 9 · 2015: 9 · 2014: 10 · 2013: 10 · 2012: 15
FWCI
2.13
Type
journal article
Language
en
Open access
closed
Locations
  • BioEssays (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Heat shock proteins research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Evolution and Genetic Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA and protein synthesis mechanisms
Keywords
HSP90, molecular chaperones, protein folding, protein quality control, phenotypic plasticity, environmental change, evolutionary change, genotype-phenotype correlation
MeSH terms
Animals, Drosophila melanogaster, Environment, Genotype, Humans, Models, Biological, Models, Genetic, Neoplasms, Phenotype, Polymorphism, Genetic, Temperature, Genetic Variation, Arabidopsis, Molecular Chaperones, HSP90 Heat-Shock Proteins

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