– Aspartate β-hydroxylase (ASPH) is silent in normal adult tissues only to re-emerge during oncogenesis where its function is required for generation and maintenance of malignant phenotypes. Exosomes enable prooncogenic secretome delivering and trafficking for long-distance cell-to-cell communication.Expression profiling of Notch signaling components positively correlates with ASPH expression in breast cancer patients, confirming that ASPH-Notch axis acts functionally in breast tumorigenesis. ASPH Protein, Human, Recombinant (His) is expressed in E. coli expression system with N-His tag. The predicted molecular weight is 49.2 kDa and the accession number is Q12797-1.