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Journal ArticleDOI

HSP90 at the hub of protein homeostasis: emerging mechanistic insights

TLDR
Comprehensive understanding of how HSP90 functions promises not only to provide new avenues for therapeutic intervention, but to shed light on fundamental biological questions.
Abstract
Heat shock protein 90 (HSP90) is a highly conserved molecular chaperone that facilitates the maturation of a wide range of proteins (known as clients). Clients are enriched in signal transducers, including kinases and transcription factors. Therefore, HSP90 regulates diverse cellular functions and exerts marked effects on normal biology, disease and evolutionary processes. Recent structural and functional analyses have provided new insights on the transcriptional and biochemical regulation of HSP90 and the structural dynamics it uses to act on a diverse client repertoire. Comprehensive understanding of how HSP90 functions promises not only to provide new avenues for therapeutic intervention, but to shed light on fundamental biological questions.

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Journal ArticleDOI

Interplay between HSP90 and Nrf2 pathways in diabetes-associated atherosclerosis

TL;DR: HSP90 inhibition protects from atherosclerosis in experimental diabetes through the induction of Nrf2-dependent cytoprotective mechanisms, reinforcing its therapeutic potential.
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Modulation of Human Hsp90α Conformational Dynamics by Allosteric Ligand Interaction at the C-Terminal Domain.

TL;DR: Evidence is found for the selective allosteric activation and inhibition of Hsp90’s conformational transition toward the closed state in response to ligand binding and shed valuable insight to further the understanding of allostero-drug design and Hsp 90‘s complexAllosteric mechanism of action.
Journal ArticleDOI

Molecular Chaperone HSP90 Is Necessary to Prevent Cellular Senescence via Lysosomal Degradation of p14ARF

TL;DR: An unconventional p14ARF degradation pathway induced by the chaperone HSP90 in association with the E3 ubiquitin ligase C-terminus of HSP70-interacting protein (CHIP) is reported, which is correlated with poor prognosis in patients with NSCLC.
Journal ArticleDOI

Mouse cytomegalovirus egress protein pM50 interacts with cellular endophilin-A2

TL;DR: Recombinant viruses, which express affinity‐tagged pM50 and/or pM53, the pUL34 and pUL31 homologues of the murine cytomegalovirus are generated, and it is found that endophilin‐A2 binds to pM 50 directly, and this interaction seems to be conserved in the p UL34 family.
References
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Journal ArticleDOI

Mechanism of Activation of the Raf-Erk Signaling Pathway by Oncogenic Mutations of B-Raf

TL;DR: The high activity mutants signal to ERK by directly phosphorylating MEK, whereas the impaired activity mutants stimulate MEK by activating endogenous C-RAF, possibly via an allosteric or transphosphorylation mechanism.
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HSP90 and the chaperoning of cancer.

TL;DR: Pharmacologically 'bribing' the essential guard duty of the chaperone HSP90 (heat-shock protein of 90 kDa) seems to offer a unique anticancer strategy of considerable promise.
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Hsp90 as a capacitor for morphological evolution

TL;DR: It is reported that when Drosophila Hsp90 is mutant or pharmacologically impaired, phenotypic variation affecting nearly any adult structure is produced, with specific variants depending on the genetic background and occurring both in laboratory strains and in wild populations.
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Adapting proteostasis for disease intervention.

TL;DR: The proteostasis network is described, a set of interacting activities that maintain the health of proteome and the organism that has the potential to ameliorate some of the most challenging diseases of this era.
Journal ArticleDOI

Function and regulation of cullin-RING ubiquitin ligases.

TL;DR: This review focuses on the composition, regulation and function of cullin–RING ligases, and describes how these enzymes can be characterized by a set of general principles.
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