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The Hsp90 Complex : A Super-Chaperone Machine as a Novel Drug Target

Title data

Scheibel, Thomas ; Buchner, Johannes:
The Hsp90 Complex : A Super-Chaperone Machine as a Novel Drug Target.
In: Biochemical Pharmacology. Vol. 56 (September 1998) Issue 6 . - pp. 675-682.
ISSN 0006-2952
DOI: https://doi.org/10.1016/S0006-2952(98)00120-8

Abstract in another language

Cells respond to sudden changes in the environmental temperature with increased synthesis of a distinct number of heat shock proteins (Hsps). Analysis of the function of these proteins in recent years has shown that all the major classes of conserved Hsps are molecular chaperones involved in assisting cellular protein folding and preventing irreversible side-reactions, such as unspecific aggregation. In addition to their function under stress conditions, molecular chaperones also play a critical role under physiological conditions. Hsp90 is one of the most abundant chaperones in the cytosol of eukaryotic cells. It is part of the cell’s powerful network of chaperones to fight the deleterious consequences of protein unfolding caused by nonphysiological conditions. In the absence of stress, however, Hsp90 is an obligate component of fundamental cellular processes such as hormone signaling and cell cycle control. In this context, several key regulatory proteins, such as steroid receptors, cell cycle kinases, and p53, have been identified as substrates of Hsp90. Recently, Hsp90 was shown to be the unique target for geldanamycin, a potent new anti-tumor drug that blocks cell proliferation. Interestingly, under physiological conditions, Hsp90 seems to perform its chaperone function in a complex with a set of partner proteins, suggesting that the Hsp90 complex is a multi-chaperone machine specialized in guiding the maturation of conformationally labile proteins. The regulation of key signaling molecules of the cell by the Hsp90 machinery is a stimulating new concept emerging from these studies, and Hsp90 has become a promising new drug target

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: stress proteins; geldanamycin; src kinases; steroid receptors; cancer; p53
Institutions of the University: Faculties
Faculties > Faculty of Engineering Science
Faculties > Faculty of Engineering Science > Chair Biomaterials
Faculties > Faculty of Engineering Science > Chair Biomaterials > Chair Biomaterials - Univ.-Prof. Dr. Thomas Scheibel
Profile Fields > Advanced Fields > Advanced Materials
Profile Fields > Advanced Fields > Molecular Biosciences
Profile Fields > Advanced Fields > Polymer and Colloid Science
Profile Fields > Emerging Fields > Food and Health Sciences
Profile Fields
Profile Fields > Advanced Fields
Profile Fields > Emerging Fields
Result of work at the UBT: No
DDC Subjects: 600 Technology, medicine, applied sciences
600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 01 Oct 2015 12:01
Last Modified: 26 Nov 2015 10:51
URI: https://eref.uni-bayreuth.de/id/eprint/20054