Target intelligence / Profile preview

Heat Shock Protein 90 Alpha (HSP90α)

Target
HSP90α
Molecular classification
Molecular chaperone, Heat shock protein
01

Overview

Heat shock protein 90 alpha (HSP90α) is a highly conserved, stress-inducible molecular chaperone that plays a central role in maintaining protein homeostasis, especially under conditions of proteotoxic stress. It supports cell survival by regulating key processes such as cell cycle control, hormone signaling pathways, apoptosis regulation, DNA repair, and signal transduction cascades. HSP90α stabilizes many oncogenic proteins and is overexpressed in various cancers, supporting tumor growth and progression. It is a therapeutic target for cancer, with inhibitors and antibodies being developed to disrupt its function.

Other names
HSP90AA1Hsp90Heat shock 90 kDa protein 1, alpha
02

Mechanism of action

Inhibition of ATP binding to HSP90, disruption of HSP90 chaperone function, inhibition of client protein stabilization

03

Biological functions

Protein foldingProtein stabilizationSignal transductionCell cycle controlApoptosis regulationDNA repairImmune modulationProtein homeostasis
04

Disease associations

CancerNeurodegenerative disease (potential)Other
05

Safety considerations

Toxicity from inhibiting essential intracellular functions when using non-selective inhibitorsPotential for off-target effectsDevelopment of resistance
06

Interacting drugs

N-terminal ATP competitive inhibitors

3 more in the full profile.

07

Biomarkers

Cancer severity/progressioneHsp90α levels (extracellular)

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