Human Cathepsin D/CTSD ELISA Kit

Lysosomal aspartic endopeptidase Cathepsin D (CTSD) participates in intracellular protein catabolism, antigen processing, and proteolytic cascades relevant to cancer biology and neurodegeneration research. The 52 kDa proenzyme is processed into heavy and light chain subunits that mediate cleavage of substrate proteins within acidic endosomal compartments. This quantitative immunoassay kit from Assay Genie is configured in a 96 Assays format and is intended for research use only, providing laboratories with a tool for measuring CTSD concentrations in human-derived samples. Researchers employ such in vitro assays to probe biomarker expression, validate disease associations, and explore enzyme regulation. The kit format supports standard laboratory workflows and integrates with absorbance-based microplate readers for quantification. Applications include studies of tumor progression, lysosomal storage disorders, apoptosis, and extracellular matrix remodeling, where CTSD activity or expression levels are investigated as indicators of cellular state and disease phenotype.