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ClpB Protein (ClpB)
- Target
- ClpB
- Molecular classification
- ATPase, Molecular chaperone, AAA+ ATPase, Protein disaggregase
01
Overview
ClpB is a member of the Hsp100/Clp family of ATPases and functions as a protein disaggregase. It plays a critical role in rescuing cells from stress-induced protein aggregation by reactivating aggregated proteins, particularly under conditions such as heat shock. It assembles into homohexameric rings that create a central axial channel through which substrates are translocated during disaggregation. The hexamer has distinct tiers corresponding to each major domain: an N-domain tier above two stacked AAA+ tiers (NBD1/NBD2), with MDs protruding from the ring structure.
- Other names
- Hsp100Hsp104 (yeast homolog)Protein disaggregase ClpB
02
Mechanism of action
ATP-dependent protein disaggregation via translocation through a central pore, in collaboration with other chaperones like DnaK/DnaJ/GrpE.
03
Biological functions
Protein disaggregationProtein refoldingStress responseThermotoleranceMaintenance of protein homeostasis
04
Disease associations
Infection (bacterial persistence)Neurodegenerative diseases (potential therapeutic target for protein aggregation disorders)
05
Safety considerations
Inhibition may compromise bacterial stress response and survival, potentially leading to increased susceptibility to antibiotics or host immune responses. Off-target effects on human ATPases should be considered during drug development.
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