Ubiquitin |
8 |
Cytosol/nucleus |
—
|
Nonlysosomal degradation pathways |
HSP 27 (HSPB1) |
27 |
Cytosol/nucleus |
—
|
Regulator of actin cytoskeleton; molecular chaperone; cytoprotection |
Heme oxygenase |
32 |
Bound to ER, extends to cytoplasm |
—
|
Degradation of heme to bilirubin; resistance to oxidant stress |
HSP 47 |
47 |
ER |
—
|
Collagen chaperone |
HSP 60 (HSPD) |
60 |
Mitochondria |
Gro EL |
Molecular chaperone |
HSP 70 (HSPA) |
72 |
Cytosol/nucleus |
Dna K |
Highly stress inducible; involved in cytoprotection against diverse agents |
|
73 |
Cytosol/nucleus |
—
|
Constitutively expressed chaperone |
HSP 90 (HSPC) |
90 |
Cytosol/nucleus |
htpG |
Regulation of steroid hormone activity |
HSP 110 |
110 |
Nucleolus/cytosol |
Clp family |
Protects nucleoli from stress |