| APPBP2 — Amyloid Precursor Protein Binding Protein 2 | |
|---|---|
| Symbol | APPBP2 |
| Full Name | Amyloid Precursor Protein Binding Protein 2 |
| Chromosome | 16q24.1 |
| NCBI Gene | 10513 |
| Ensembl | ENSG00000142541 |
| OMIM | 604390 |
| UniProt | Q92688 |
| Diseases | Alzheimer's Disease, Down Syndrome |
| Expression | Cerebral cortex, Hippocampus, Cerebellum, Testis |
Appbp2 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.
APPBP2 (also known as PAT1) is a gene located on chromosome 16q24.1 that encodes a protein that binds to the cytoplasmic domain of Amyloid Precursor Protein (APP). APPBP2 was initially identified as an APP-interacting protein that modulates APP trafficking and processing. The protein is expressed in various tissues, with high expression in brain regions involved in learning and memory [1].
APPBP2 plays a role in the intracellular trafficking of APP from the Golgi apparatus to the cell surface and endocytic compartments. This trafficking is critical because the subcellular localization of APP determines which secretases have access to it, thereby influencing whether APP is processed along the amyloidogenic or non-amyloidogenic pathway.
APPBP2 binds to the conserved YENPTY motif in the APP cytoplasmic domain. This interaction:
Beyond APP interaction, APPBP2:
APPBP2 genetic variants have been investigated for association with AD risk. The protein may influence AD pathogenesis by modulating APP processing and amyloid-beta production. Altered APPBP2 expression or function could shift the balance toward increased amyloidogenic processing.
Due to the location of APP on chromosome 21, individuals with Down syndrome have increased APP expression. APPBP2 may play a modified role in this context, contributing to the early-onset AD phenotype observed in Down syndrome.
The study of Appbp2 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.