Hsp90 and developmental networks

Suzannah Rutherford, Jennifer R. Knapp, Peter Csermely

Research output: Chapter in Book/Report/Conference proceedingChapter

36 Citations (Scopus)


The most abundant cytoplasmic chaperone of eukaryotic cells, Hsp90 is a hub in developmental regulatory networks and the first example described of the phenomenon of molecular buffering. As a chaperone for many different signaling proteins, Hsp90 maintains the clarity and strength of communication within and between cells, concealing developmental and stochastic variations that otherwise cause abrupt morphological changes in a large variety of organisms, including Drosophila and Arabidopsis. The chapter provides a framework for understanding how Hsp90 controls the sudden appearance of novel morphologies. We start with a discussion of the longstanding problem of hidden polygenic variation and then introduce the idea of signal transduction thresholds in mediating the effect of Hsp90 on the expression of phenotypic variation. This leads to a discussion of the role of nonlinearity in creating thresholds for sudden changes in cellular responses to developmental signals. We end with speculation on the potentially pivotal role of Hsp90 in controlling the developmental networks that determine morphological stasis and change in evolution.

Original languageEnglish
Title of host publicationMolecular Aspects of the Stress Response
Subtitle of host publicationChaperones, Membranes and Networks
PublisherSpringer New York
Number of pages8
ISBN (Print)9780387399744
Publication statusPublished - Jan 1 2007

Publication series

NameAdvances in Experimental Medicine and Biology
ISSN (Print)0065-2598

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)

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    Rutherford, S., Knapp, J. R., & Csermely, P. (2007). Hsp90 and developmental networks. In Molecular Aspects of the Stress Response: Chaperones, Membranes and Networks (pp. 190-197). (Advances in Experimental Medicine and Biology; Vol. 594). Springer New York. https://doi.org/10.1007/978-0-387-39975-1_16