| Amphiphysin Protein | |
|---|---|
| Gene | [AMPH](/genes/AMPH) |
| UniProt | P49407 |
| PDB | 1BW8 |
| Mol. Weight | 76 kDa |
| Localization | Presynaptic terminal, endocytic zones |
| Family | Amphiphysin family, BAR domain proteins |
| Diseases | [Parkinson's Disease](/diseases/parkinsons-disease), [Alzheimer's Disease](/diseases/alzheimers), [Encephalitis](/diseases/encephalitis) |
Amphiphysin 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.
Amphiphysin is a key synaptic protein that functions in clathrin-mediated endocytosis at the presynaptic terminal[1]. Amphiphysin is best known as the target of autoantibodies in paraneoplastic stiff-person syndrome with encephalitis, highlighting its importance in synaptic function[2].
The AMPH gene encodes a protein of 695 amino acids that contains multiple functional domains. Amphiphysin is expressed specifically in neurons, with particularly high expression in the brain and spinal cord[3].
Amphiphysin contains several distinct domains:
The Bin/Amphiphysin/Rvs (BAR) domain:
The central proline-rich region:
The C-terminal Src homology 3 (SH3) domain:
Amphiphysin plays multiple roles in synaptic vesicle recycling:
At the presynaptic terminal, amphiphysin:
Amphiphysin interacts with:
In PD models and patients:
Amphiphysin is implicated in AD:
Amphiphysin is a target of autoantibodies:
Therapeutic strategies include:
The study of Amphiphysin 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.
Wigge et al. Amphiphysin structure and function (1997). 1997. ↩︎
Grau et al. Amphiphysin autoantibodies (2013). 2013. ↩︎
Wu et al. Amphiphysin in synaptic function (2017). 2017. ↩︎