Bag3 Protein is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
BAG3 (Bcl-2-Associated Athanogene 3) is a co-chaperone protein that functions primarily through its interaction with Hsp70 family members. BAG3 is unique among BAG family proteins due to its specific expression in muscle and neuronal tissues, and its critical role in autophagy, particularly in the clearance of aggregated proteins. Mutations in BAG3 are associated with dilated cardiomyopathy and neurodegenerative diseases [1][2].
| Property | Value |
|---|---|
| Protein Name | BAG3 |
| Gene | BAG3 |
| UniProt ID | O95843 |
| Molecular Weight | ~57.5 kDa (575 amino acids) |
| Aliases | BAG-3, BIS, MFM6 |
| Tissue Specificity | Muscle, neurons, heart |
BAG3 contains several key domains:
BAG3 is a master regulator of autophagy:
BAG3 provides cellular protection:
In neurons:
BAG3 mutations cause:
In neurodegeneration:
BAG3-related myopathies:
Key BAG3 interactions:
Targeting BAG3:
The study of Bag3 Protein 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.
Doi H, et al. (2004). BAG3 induces alpha-synuclein degradation. J Neurosci. 24(32):7065-7074. PMID:15295009 ↩︎
Gamerdinger M, et al. (2011). BAG3 mediates chaperone-based aggresome-targeting and selective autophagy. J Cell Sci. 124(Pt 2):227-235. PMID:21172806 ↩︎
Takayama S, et al. (1999). BAG family molecular chaperones. Biochim Biophys Acta. 1450(1):1-8. PMID:10398219 ↩︎
Gamerdinger M, et al. (2009). BAG3 is a key regulator of protein homeostasis. EMBO J. 28(20):3257-3272. PMID:19763085 ↩︎
Franceschetti S, et al. (2013). BAG3 and health: a novel role in disease. Cell Death Dis. 4:e573. PMID:23519117 ↩︎
Seil M, et al. (2012). BAG3 in neuronal physiology. Autophagy. 8(10):1545-1547. PMID:22874541 ↩︎
Norton N, et al. (2011). BAG3 mutations cause cardiomyopathy. Sci Transl Med. 3(100):100ra97. PMID:21957157 ↩︎
McGough IJ, et al. (2014). BAG3 in neurodegeneration. Nat Rev Neurosci. 15(2):77-78. PMID:24514167 ↩︎
Merolla M, et al. (2012). BAG3 interacts with p62 in aggresome formation. J Cell Sci. 125(Pt 24):6188-6199. PMID:22956541 ↩︎