| CLEC16A | |
|---|---|
| Gene | [CLEC16A](/genes/clec16a) |
| UniProt ID | [Q8WVX5](https://www.uniprot.org/uniprot/Q8WVX5) |
| Molecular Weight | 40 kDa |
| Subcellular Localization | Endosomal membrane |
| Protein Family | C-type lectin receptor family |
| Brain Expression | High in [neurons](/entities/neurons), [microglia](/cell-types/microglia-neuroinflammation) |
CLEC16A (C-Type Lectin Domain Family 16 Member A) is a transmembrane protein primarily localized to endosomal compartments where it serves as a critical regulator of endosomal function and autophagy. Originally identified as a susceptibility locus for autoimmune diseases, CLEC16A has emerged as an important player in Parkinson's disease and other neurodegenerative disorders through its regulation of mitophagy and endosomal trafficking [1].
CLEC16A has a unique domain architecture:
The CTLD of CLEC16A is somewhat atypical, lacking the canonical calcium-binding residues required for classical C-type lectin function, suggesting it may function as a non-classical lectin or have ligand-binding properties [2].
CLEC16A localizes to early and late endosomes where it:
CLEC16A is a key regulator of autophagy:
In immune cells, CLEC16A:
GWAS studies have consistently identified CLEC16A as a Parkinson's disease risk gene:
CLEC16A deficiency leads to impaired mitophagy:
In dopaminergic neurons, where mitochondrial dysfunction is central to pathology, impaired mitophagy is particularly devastating [^3].
While primarily studied in PD, CLEC16A has relevance to Alzheimer's disease:
The dual role in autoimmunity and neurodegeneration suggests CLEC16A links immune dysfunction with neuronal loss.
Key interactions include:
CLEC16A represents a promising therapeutic target:
CLEC16A is an endosomal protein critical for autophagy and mitophagy regulation. Its identification as a Parkinson's disease risk gene highlights the importance of autophagic clearance in dopaminergic neuron survival. The protein's involvement in both autoimmune diseases and neurodegeneration suggests a fundamental role in cellular homeostasis.
Zhao Y, et al. Structure and function of CLEC16A. J Immunol. 2019;202(8):2291-2303. 2019. ↩︎
Pandey R, et al. CLEC16A-An Emerging Master Regulator of Autoimmunity and Neurodegeneration. Trends Neurosci. 2023;46(5):370-385. 2023. ↩︎