Hspa2 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.
Heat Shock Protein Family A (Hsp70) Member 2 is encoded by the HSPA2 gene located on chromosome 14q23.3. This gene encodes a testis-specific member of the Hsp70 family of molecular chaperones. HSPA2 is essential for spermatogenesis and male fertility, playing critical roles in meiosis, chromatin remodeling, and post-meiotic differentiation of germ cells. While primarily studied in the context of reproduction, HSPA2 also has important functions in cellular stress responses and protein homeostasis. [1]
| Gene Symbol | HSPA2 |
|---|---|
| Full Name | Heat Shock Protein Family A (Hsp70) Member 2 |
| Chromosome | 14q23.3 |
| NCBI Gene ID | 3310 |
| OMIM | 140100 |
| Ensembl ID | ENSG00000113013 |
| UniProt ID | P54652 |
| Protein Length | 642 amino acids |
| Molecular Weight | 70.0 kDa |
HSPA2 contains the canonical Hsp70 domain architecture:
HSPA2 shares 84% amino acid identity with HSPA1A/HSPA1B, with the highest divergence in the substrate-binding domain, suggesting specialized client protein recognition.
HSPA2 performs essential molecular functions:
HSPA2 shows highly restricted expression:
| Disease | Mechanism | Evidence |
|---|---|---|
| Male infertility | Null mutations cause azoospermia | HSPA2 knockout mice |
| Oligospermia | Reduced HSPA2 in infertile men | Patient studies |
| Testicular cancer | Altered expression in seminomas | Tumor expression studies |
| Neurodegeneration | Potential role in protein quality control | Association studies |
HSPA2 is critical for male fertility:
HSPA2 as a therapeutic target:
HSPA2 knockout mice exhibit:
The study of Hspa2 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.