Molecular-level interplay between intrinsically disordered clients and Hsp90.

Area of Science:

• Molecular Biology
• Neuroscience
• Protein Chemistry

Background:

• Proteostasis, essential for cell function, relies on molecular chaperones like Hsp90.
• Hsp90's canonical role involves remodeling folded proteins via ATPase activity.
• Growing evidence links Hsp90 to neurodegenerative diseases, particularly its noncanonical interactions with intrinsically disordered proteins (IDPs).

Purpose of the Study:

• To review recent advances in understanding Hsp90's mechanisms for chaperoning IDPs.
• To explore the interplay between Hsp90 and its disordered clients, tau and alpha-synuclein.
• To survey emerging insights into how this chaperone-client interaction is modulated in neurodegeneration.

Main Methods:

• Literature review of recent experimental and theoretical studies.
• Analysis of existing data on Hsp90 structure-function relationships.
• Synthesis of findings related to Hsp90 and IDPs in neurodegenerative contexts.

Main Results:

• Recent advances clarify Hsp90's intricate mechanisms for chaperoning tau and alpha-synuclein.
• The interplay between Hsp90 and these specific IDPs is complex and not fully understood.
• Emerging insights highlight the modulation of this chaperone-client relationship in neurodegeneration.

Conclusions:

• Hsp90 plays a significant role in managing intrinsically disordered proteins implicated in neurodegenerative diseases.
• Further research into Hsp90-IDP interactions is critical for developing therapeutic strategies.
• Understanding these mechanisms offers new avenues for targeting neurodegeneration.