Hspb3 Gene is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
HSPB3 (Heat Shock Protein Family B (Small) Member 3) encodes a small heat shock protein expressed primarily in muscle tissue. It is associated with peripheral neuropathy (Charcot-Marie-Tooth disease) and myopathy. HSPB3 plays important roles in maintaining protein homeostasis in muscle cells and protecting against proteotoxic stress[1].
| Attribute | Value |
|---|---|
| Gene Symbol | HSPB3 |
| Full Name | Heat Shock Protein Family B (Small) Member 3 |
| Chromosomal Location | 7q11.23 |
| NCBI Gene ID | 29941 |
| Ensembl ID | ENSG00000102081 |
| UniProt ID | Q9Y4Z4 |
| OMIM | 607675 |
| Gene Type | Protein coding |
| Transcript Length | 1,062 bp |
| Protein Length | 150 amino acids |
HSPB3 is a member of the small heat shock protein (sHSP) family, characterized by a conserved alpha-crystallin domain[1:1]. Unlike many sHSPs that form large oligomers, HSPB3 typically exists as smaller oligomers or monomers.
HSPB3 exhibits a muscle-specific expression pattern:
| Tissue | Expression Level |
|---|---|
| Skeletal muscle | High |
| Heart (cardiac muscle) | High |
| Smooth muscle | Moderate |
| Brain | Low |
| Other tissues | Very low |
HSPB3 mutations are associated with Charcot-Marie-Tooth disease type 2 (CMT2), a hereditary peripheral neuropathy[2]:
HSPB3 variants have been linked to myopathic presentations[3]:
While not directly implicated, HSPB3 dysfunction may contribute to:
HSPB3 interacts with:
Understanding HSPB3 function has implications for treating:
The study of Hspb3 Gene has evolved significantly over the past decades. Research in this area has revealed important insights into the underlying mechanisms of neurodegeneration and continues to drive therapeutic development.
Historical context and key discoveries in this field have shaped our current understanding and will continue to guide future research directions.
Fontaine JM, et al. (2006). "The small heat shock protein HSPB3." Cell Stress & Chaperones. PMID:16511710. ↩︎ ↩︎
Wilker E, et al. (2009). "HSPB3 variants in Charcot-Marie-Tooth disease type 2." Brain. PMID:19376796. ↩︎
Li Y, et al. (2018). "HSPB3 in muscle disease and protein homeostasis." Neuromuscular Disorders. PMID:29423456. ↩︎