Article · Wikipedia archive · Last revised Jul 7, 2026

Hsp33

Hsp33 protein is a molecular chaperone, distinguished from all other known chaperones by its mode of functional regulation. Its activity is redox regulated. Hsp33 is a cytoplasmically localized protein with highly reactive cysteines that respond quickly to changes in the redox environment. Oxidizing conditions like H2O2 cause disulphide bonds to form in Hsp33, a process that leads to the activation of its chaperone function.

Last revised
Jul 7, 2026
Read time
≈ 1 min
Length
118 w
Citations
1
Source
Hsp33 protein
Identifiers
SymbolHsp33
PfamPF01430
InterProIPR000397
Available protein structures:
PDB  PDB: 1hw7PDB: 1i7fPDB: 1vq0PDB: 1vzyPDB: 1xjhIPR000397 PF01430 (ECOD; PDBsum)  
AlphaFold

Hsp33 protein is a molecular chaperone, distinguished from all other known chaperones by its mode of functional regulation. Its activity is redox regulated. Hsp33 is a cytoplasmically localized protein with highly reactive cysteines that respond quickly to changes in the redox environment. Oxidizing conditions like H2O2 cause disulphide bonds to form in Hsp33, a process that leads to the activation of its chaperone function.1

References

References

  1. Jakob U, Muse W, Eser M, Bardwell JC (1999). "Chaperone activity with a redox switch". Cell. 96 (3): 341–352. doi:10.1016/S0092-8674(00)80547-4. PMID 10025400.
This article incorporates text from the public domain Pfam and InterPro: IPR000397