Neuroblast differentiation-associated protein AHNAK

AHNAK (neuroblast differentiation-associated protein) is a large 629 kDa protein encoded by the AHNAK gene in humans (UniProt: Q09666). Its primary function is thought to support neuronal cell differentiation, though its precise molecular mechanisms remain incompletely characterized (UniProt: Q09666).

AHNAK is expressed in neural tissues where it may contribute to neuronal development and differentiation. UniProt records no established monogenic disease associations for this protein (UniProt: Q09666).

In Alzheimer's Disease, AHNAK shows elevated abundance in post-mortem AD brain tissue compared to age-matched controls (Chaparral AD proteomics). Across multiple subcellular fractions analyzed by quantitative mass spectrometry, the protein is significantly upregulated with a mean log2 fold-change of +1.27 (Chaparral AD proteomics), suggesting a consistent increase in AD-affected brain tissue. This upregulation may reflect altered cellular responses during AD pathogenesis, though its specific role in disease mechanisms requires further investigation.