Axin2 Protein is a protein involved in key cellular signaling pathways relevant to neurodegenerative diseases. This page provides comprehensive information about its structure, normal biological function, and role in disease pathogenesis.
Axin2 Protein participates in critical cellular processes that, when dysregulated, contribute to neurodegeneration. Understanding this protein's function is essential for developing therapeutic interventions for Alzheimer's disease, Parkinson's disease, and related conditions.
| Axin2 Protein | |
|---|---|
| Protein Name | Axin2 |
| Gene | [AXIN2](/genes/axin2) |
| UniProt ID | Q9Y2T1 |
| PDB Structure | 1XM7, 2NLJ, 5RPR |
| Molecular Weight | 82 kDa |
| Subcellular Localization | Cytoplasm, Nucleus |
| Protein Family | Axin family (scaffold protein) |
Axin2 shares structural similarity with Axin1, containing an RGS domain, beta-catenin binding domain, DIX domain, and APC binding site. The DIX domain enables Axin2 to form oligomers. Axin2 is induced by Wnt signaling, providing negative feedback to the pathway.
Axin2 is a scaffold protein in the Wnt/beta-catenin destruction complex. Like Axin1, it facilitates GSK3-beta-mediated phosphorylation of beta-catenin. Axin2 is induced by Wnt signaling, creating a feedback loop that regulates pathway activity. It also participates in DNA damage response and p53-independent apoptosis.
AXIN2 mutations cause tooth agenesis and predispose to colorectal cancer. In AD, Axin2 expression is altered in affected brain regions. Axin2 regulates neural stem cell proliferation and neurogenesis, which are impaired in AD. It also interacts with tau pathology and neuronal survival.
Axin2 modulators are being explored, though fewer than for Axin1. Gene therapy and small molecule approaches to enhance Axin2 function are potential strategies for treating neurodegenerative diseases.